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Next page > GH: 00742208 [bad data, blank import] USA: Vermont Brandon: Brandon E. F. Williams 1 1908-5-22
NEBC: 00743599 [bad data, blank import] USA: Maine Mount Desert Island: Mount Desert Island E. F. Williams 1893-9-2
GH: 00743600 [bad data, blank import] USA: Vermont Ripton: Ripton E. F. Williams 1908-7-13
GH: 00661553 [bad data, blank import] USA: Maine Mount Desert Island: Mount Desert Island E. F. Williams 1 1897-7-16
GH: 00738516 [bad data, blank import] USA: Maine Mount Desert Island: Mount Desert Island E. F. Williams 1 1899-7-18
GH: 00738519 [bad data, blank import] USA: New Hampshire Crawford E. F. Williams 1895-7-15
NEBC: 00740763 [bad data, blank import] USA: Vermont Willoughby E. F. Williams 1904-5-26
NEBC: 00740764 [bad data, blank import] USA: Vermont Willoughby E. F. Williams 1905-5-19
GH: 01021380 [bad data, blank import] USA: Vermont Willoughby E. F. Williams 1896-7-20
NEBC: 01079348 [bad data, blank import] USA: New Hampshire Mount Monadnock E. F. Williams 1901-9-2
GH: 01161923 [bad data, blank import] USA: Massachusetts Scituate: Scituate E. F. Williams 1901-9-8
GH: 01058952 [bad data, blank import] USA: Massachusetts Amherst: Amherst E. F. Williams
NEBC: 00671566 [bad data, blank import] USA: Vermont Willoughby E. F. Williams 1896-7-22
NEBC: 00436070 Bryoria implexa (Hoffmann) Brodo & D. Hawksworth USA: Maine [data not captured] E. F. Williams 1901-2-23
NEBC: 00436603 Dibaeis baeomyces (Linnaeus f.) Rambold & Hertel USA: Massachusetts Norwood: [data not captured] E. F. Williams 1895-4-28
NEBC: 00436830 Lobaria pulmonaria (Linnaeus) Hoffmann USA: Massachusetts Barnstable: [data not captured] E. F. Williams 1896-4-18
FH: 00372396 Lobaria pulmonaria (Linnaeus) Hoffmann USA: Massachusetts Barnstable: [no additional data] E. F. Williams 1896
NEBC: 00446973 Lobaria quercizans Michaux USA: New Hampshire [data not captured] E. F. Williams 1898-7-4
NEBC: 00446143 Peltigera polydactyla (Necker) Hoffmann USA: New Hampshire Mt. Monadnock: [no additional data] E. F. Williams 1898-5-30
NEBC: 00446628 Umbilicaria mammulata (Acharius) Tuckerman USA: Massachusetts [data not captured] E. F. Williams 1896-9-19
NEBC: 00446629 Umbilicaria mammulata (Acharius) Tuckerman USA: Massachusetts [data not captured] E. F. Williams 1896-9-13
NEBC: 00446689 Umbilicaria muhlenbergii (Acharius) Tuckerman USA: Massachusetts [data not captured] E. F. Williams 1896-9-18
NEBC: 00446776 Xanthoria parietina (Linnaeus) Th. Fries USA: Massachusetts Ipswich: [no additional data] E. F. Williams 1899-8-9
Aceraceae NEBC: 00752795 Acer negundo Linnaeus USA: New Hampshire Walpole: Walpole E. F. Williams 1901-7-28
NEBC: 00752796 Acer negundo Linnaeus USA: New Hampshire Walpole: Walpole E. F. Williams 1901-7-28
NEBC: 00752811 Acer negundo Linnaeus USA: Vermont Middlebury: Middlebury E. F. Williams 1908-5-27
NEBC: 00772431 Acer negundo Linnaeus USA: Massachusetts Arlington: Arlington Heights E. F. Williams 1893-8-8
GH: 00772446 Acer negundo Linnaeus USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-17
NEBC: 00772448 Acer negundo Linnaeus USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-17
GH: 00772450 Acer negundo Linnaeus USA: Massachusetts Waltham: The Viles farm where stands the lar... E. F. Williams 3016
GH: 00772463 Acer negundo Linnaeus USA: Massachusetts Dover: Dover E. F. Williams 1908-9-2
GH: 00752818 Acer negundo violaceum (G. Kirchner) H. Jaeger USA: Rhode Island Woonsocket: Woonsocket E. F. Williams 1910-10-2
GH: 00752823 Acer negundo violaceum (G. Kirchner) H. Jaeger USA: Vermont Middlebury: Middlebury E. F. Williams 1908-5-27
NEBC: 00338105 Acer pensylvanicum Linnaeus USA: Massachusetts on Blue Hill, Blue Hills Reservation E. F. Williams 1901-5-12
NEBC: 00772541 Acer pensylvanicum Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-23
GH: 00772544 Acer pensylvanicum Linnaeus USA: New Hampshire Shelburne: Shelburne E. F. Williams 1895-7-25
GH: 00772605 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-22
NEBC: 00772606 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-6-10
NEBC: 00772607 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1901-5-28
NEBC: 00772608 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-6-10
NEBC: 00772609 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-6-10
NEBC: 00772610 Acer pensylvanicum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-22
GH: 00772652 Acer pensylvanicum Linnaeus USA: Massachusetts Gloucester: Gloucester E. F. Williams 1896-6-13
GH: 00772118 Acer pensylvanicum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1901-5-15
GH: 00772678 Acer pensylvanicum Linnaeus USA: Massachusetts Petersham: Petersham E. F. Williams 1910-6-3
GH: 00772774 Acer pensylvanicum Linnaeus USA: Massachusetts Ashfield: Ashfield E. F. Williams 1907-7-10
GH: 00772802 Acer pensylvanicum Linnaeus USA: Massachusetts Mount Greylock E. F. Williams 1901-6-16
GH: 01792708 Acer platanoides Linnaeus USA: Massachusetts Milton: Blue Hill Ave. E. F. Williams 1896-4-26
GH: 01792740 Acer pseudoplatanus Linnaeus USA: Massachusetts Cohasset: Potter place E. F. Williams
NEBC: 00338121 Acer rubrum Linnaeus USA: Massachusetts Wareham: Tihonet E. F. Williams 1895-3-31
NEBC: 00338122 Acer rubrum Linnaeus USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1895-4-21
NEBC: 00338123 Acer rubrum Linnaeus USA: Massachusetts Norwood: Purgatory swamp E. F. Williams 1895-4-28
NEBC: 00338126 Acer rubrum Linnaeus USA: Massachusetts Milton: Blue Hills Reservation, edge of Houg... E. F. Williams 1896-4-26
GH: 00338128 Acer rubrum Linnaeus USA: Massachusetts Milton: Blue Hills Reserv., edge of Houghton... E. F. Williams 1896-4-26
GH: 00338129 Acer rubrum Linnaeus USA: Massachusetts Wilmington: E. F. Williams 1900-4-22
GH: 00772850 Acer rubrum Linnaeus USA: Maine Caribou: Caribou E. F. Williams 1900-8-2
GH: 00772851 Acer rubrum Linnaeus USA: Maine Caribou: Caribou E. F. Williams 1900-8-2
GH: 00772874 Acer rubrum Linnaeus USA: Maine Mount Desert (Hancock County): Northeast Har... E. F. Williams 1910-8-4
GH: 00772936 Acer rubrum Linnaeus USA: New Hampshire Wentworth: Wentworth E. F. Williams 1908-7-24
GH: 00772975 Acer rubrum Linnaeus USA: New Hampshire Jaffrey: Jaffrey E. F. Williams 1 1899-5-30
NEBC: 00677053 Acer rubrum Linnaeus USA: Vermont Willoughby E. F. Williams 1898-7-8
GH: 00677063 Acer rubrum Linnaeus USA: Vermont Wallingford: Wallingford E. F. Williams 1908-5-25
NEBC: 00677064 Acer rubrum Linnaeus USA: Vermont Wallingford: Wallingford E. F. Williams 1908-5-25
NEBC: 00677111 Acer rubrum Linnaeus USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-14
GH: 00677113 Acer rubrum Linnaeus USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-14
GH: 00677135 Acer rubrum Linnaeus USA: Massachusetts Brookline: Brookline E. F. Williams 1896-5-17
GH: 00677140 Acer rubrum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1910-4-2
GH: 00677151 Acer rubrum Linnaeus USA: Massachusetts Sharon: Sharon E. F. Williams 1908-9-5
NEBC: 00677153 Acer rubrum Linnaeus USA: Massachusetts Walpole: Walpole E. F. Williams 5.2 1908-8-14
NEBC: 00677227 Acer rubrum Linnaeus USA: Massachusetts Goshen: Goshen E. F. Williams 1 1907-6-18
GH: 00752887 Acer rubrum trilobum K. Koch USA: Massachusetts Walpole: Walpole E. F. Williams 1908-8-14
GH: 00752897 Acer saccharinum Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1901-8-10
GH: 00631089 Acer saccharinum Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-7
GH: 00677722 Acer saccharinum Linnaeus USA: Vermont Brandon: Brandon E. F. Williams 1908-5-23
NEBC: 00677723 Acer saccharinum Linnaeus USA: Vermont Brandon: Brandon E. F. Williams 1908-5-23
GH: 00677737 Acer saccharinum Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
NEBC: 00677887 Acer saccharinum Linnaeus USA: Massachusetts Canton: Canton E. F. Williams 1895-4-5
NEBC: 00677888 Acer saccharinum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1896-4-8
GH: 00677889 Acer saccharinum Linnaeus USA: Massachusetts Canton: Canton E. F. Williams 1896-4-5
GH: 00677890 Acer saccharinum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1896-4-8
GH: 00677891 Acer saccharinum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1896-4-26
GH: 00677892 Acer saccharinum Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1896-4-26
GH: 00663208 Acer saccharum Marshall USA: New Hampshire Warren: Warren E. F. Williams 1908-7-23
NEBC: 00663233 Acer saccharum Marshall USA: Vermont Willoughby E. F. Williams 1898-7-8
GH: 00663242 Acer saccharum Marshall USA: Vermont Middlebury: Middlebury E. F. Williams 1908-5-27
GH: 00663251 Acer saccharum Marshall USA: Vermont Brandon: Brandon E. F. Williams 1908-5-22
GH: 00663282 Acer saccharum Marshall USA: Massachusetts Winchester: Winchester E. F. Williams 1 1897-5-9
GH: 00663283 Acer saccharum Marshall USA: Massachusetts Wayland: Wayland E. F. Williams 2 1900-5-20
NEBC: 00663287 Acer saccharum Marshall USA: Massachusetts Dedham: Dedham E. F. Williams 1895-9-15
NEBC: 00752830 Acer saccharum nigrum (Michx. f.) Britton USA: New Hampshire Alstead: Alstead E. F. Williams 1901-7-27
NEBC: 00752855 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Brandon: Brandon E. F. Williams 1908-5-28
GH: 00752856 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Brandon: Brandon E. F. Williams 1908-6-2
NEBC: 00752861 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Clarendon: Clarendon E. F. Williams 1907-8-9
A: 00752862 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Clarendon: Clarendon E. F. Williams 1907-8-9
GH: 00752865 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-5-31
GH: 00752868 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-6-20
GH: 00752869 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-5-31
NEBC: 00752870 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-6-20
NEBC: 00752871 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-5-31
A: 00752872 Acer saccharum nigrum (Michx. f.) Britton USA: Vermont Wallingford: Wallingford E. F. Williams 1907-6-20
Adiantaceae GH: 00678003 Cryptogramma stelleri (S. G. Gmelin) Prantl USA: Vermont Willoughby E. F. Williams 1894-8-2
NEBC: 00678009 Cryptogramma stelleri (S. G. Gmelin) Prantl USA: Vermont Willoughby E. F. Williams 1896-7-23
GH: 00681499 Pellaea atropurpurea (Linnaeus) Link USA: Rhode Island Lincoln: Lincoln E. F. Williams 1910-10-2
GH: 00681547 Pellaea glabella Mettenius ex Kuhn USA: Vermont Willoughby Mountain E. F. Williams 1894-8-1
Aizoaceae GH: 00751209 Mollugo verticillata Linnaeus USA: New Hampshire Hampton: Hampton E. F. Williams 1902-8-31
NEBC: 00751210 Mollugo verticillata Linnaeus USA: New Hampshire Hampton: Hampton E. F. Williams 1902-8-31
GH: 00751212 Mollugo verticillata Linnaeus USA: New Hampshire Rye: Rye E. F. Williams 1901-9-19
GH: 00751223 Mollugo verticillata Linnaeus USA: Vermont Vergennes: Vergennes E. F. Williams 1908-7-21
NEBC: 00761320 Mollugo verticillata Linnaeus USA: Massachusetts Boston: Hyde Park, Readville E. F. Williams 1895-9-7
NEBC: 00761338 Mollugo verticillata Linnaeus USA: Rhode Island Tiverton: Tiverton E. F. Williams 1903-9-27
Alismataceae NEBC: 01032214 Alisma subcordatum Pursh USA: Massachusetts Rowley: Rowley E. F. Williams 1906-9-3
NEBC: 01032218 Alisma subcordatum Pursh USA: Massachusetts Boxford: Boxford E. F. Williams 1899-8-3
NEBC: 01032236 Alisma subcordatum Pursh USA: Massachusetts Winchester: Winchester, Winter Pond E. F. Williams 1894-9-2
GH: 01032276 Alisma subcordatum Pursh USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
GH: 01032341 Alisma triviale Pursh USA: New Hampshire Hampton: Hampton E. F. Williams 1902-8-31
GH: 01032342 Alisma triviale Pursh USA: New Hampshire Walpole: Walpole E. F. Williams 1 1901-7-28
GH: 01032353 Alisma triviale Pursh USA: Vermont Middlebury: Middlebury E. F. Williams 1908-7-8
GH: 01032357 Alisma triviale Pursh USA: Vermont Norwich: Norwich E. F. Williams 1910-7-11
GH: 01032406 Echinodorus tenellus (Martius) Buchenau USA: Massachusetts Winchester: Winchester, Winter Pond E. F. Williams 2 1901-10-13
GH: 01080304 Sagittaria cuneata E. Sheldon USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-12
GH: 01080306 Sagittaria cuneata E. Sheldon USA: New Hampshire Cambridge: Cambridge E. F. Williams 1906-7-25
NEBC: 01080365 Sagittaria engelmanniana J. G. Smith USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
NEBC: 01080478 Sagittaria filiformis J. G. Smith USA: Massachusetts Natick: So. [South] Natick, Charles river E. F. Williams 1898-9-18
GH: 01080513 Sagittaria filiformis J. G. Smith USA: Rhode Island East Providence: East Providence E. F. Williams 1895-7-28
GH: 01080519 Sagittaria graminea Michaux USA: Maine Magalloway E. F. Williams 1903-8-1
GH: 01032412 Sagittaria graminea Michaux USA: New Hampshire Gorham: Gorham E. F. Williams 1895-8-5
GH: 01032653 Sagittaria latifolia Willdenow USA: New Hampshire Wentworth: Wentworth E. F. Williams 1908-7-29
NEBC: 01032686 Sagittaria latifolia Willdenow USA: Massachusetts Boxford: Boxford E. F. Williams 1 1899-8-3
NEBC: 01032700 Sagittaria latifolia Willdenow USA: Massachusetts Newburyport: Newburyport E. F. Williams 1898-7-31
NEBC: 01032720 Sagittaria latifolia Willdenow USA: Massachusetts Concord: Concord, shore of Concord River E. F. Williams 1896-9-27
GH: 01032721 Sagittaria latifolia Willdenow USA: Massachusetts Concord: Concord, on the Brigham farm E. F. Williams 1908-8-9
GH: 01032722 Sagittaria latifolia Willdenow USA: Massachusetts Concord: Concord, on Brigham farm E. F. Williams 1908-8-9
GH: 01032723 Sagittaria latifolia Willdenow USA: Massachusetts Concord: Concord, on Brigham farm E. F. Williams 1908-8-9
NEBC: 01032740 Sagittaria latifolia Willdenow USA: Massachusetts Newton: Newton, Rapids of Charles River, Riv... E. F. Williams 1897-9-5
NEBC: 01032741 Sagittaria latifolia Willdenow USA: Massachusetts Newton: Newton, Rapids of Charles River, Riv... E. F. Williams 1897-9-5
GH: 01032780 Sagittaria latifolia Willdenow USA: Massachusetts Sharon: Sharon E. F. Williams 1896-7-12
GH: 01032781 Sagittaria latifolia Willdenow USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
NEBC: 01032782 Sagittaria latifolia Willdenow USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
GH: 01080920 Sagittaria rigida Pursh USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-12
NEBC: 01080951 Sagittaria rigida Pursh USA: Vermont Weybridge: Weybridge E. F. Williams 1908-7-8
GH: 00518780 Sagittaria teres S. Watson USA: Massachusetts Barnstable: Wequeuoket [Wequaquet] pond - Ce... E. F. Williams 1896-7-4
NEBC: 00733847 Sagittaria teres S. Watson USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
GH: 00733848 Sagittaria teres S. Watson USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
GH: 00733850 Sagittaria teres S. Watson USA: Massachusetts Barnstable Town E. F. Williams 1897-9-12
NEBC: 00733853 Sagittaria teres S. Watson USA: Massachusetts Barnstable Town E. F. Williams 1897-9-12
Alliaceae GH: 00573081 Allium canadense Linnaeus USA: Massachusetts Woburn: Woburn E. F. Williams 1896-5-30
GH: 00573082 Allium canadense Linnaeus USA: Massachusetts Lincoln: Lincoln E. F. Williams 1899-6-17
GH: 00573128 Allium canadense Linnaeus USA: Rhode Island Cumberland: Cumberland E. F. Williams 1904-5-15
GH: 00573156 Allium canadense Linnaeus USA: Connecticut Stratford: Stratford E. F. Williams 1901-6-9
GH: 00573157 Allium canadense Linnaeus USA: Connecticut Stratford: Stratford E. F. Williams 1901-6-9
NEBC: 00567367 Allium schoenoprasum Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1901-8-10
GH: 00734297 Allium tricoccum Aiton USA: New Hampshire Alstead: Alstead E. F. Williams 1901-7-27
NEBC: 00734304 Allium tricoccum Aiton USA: Vermont Willoughby E. F. Williams 1896-6-21
GH: 00734321 Allium tricoccum Aiton USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-8
GH: 00734320 Allium tricoccum Aiton USA: Vermont Sutton: Sutton E. F. Williams 1898-6-10
NEBC: 00734322 Allium tricoccum Aiton USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-8
GH: 00734331 Allium tricoccum Aiton USA: Vermont Hancock: Hancock E. F. Williams 1908-7-5
Amaranthaceae GH: 01928929 Acnida cannabina Moquin-Tandon USA: New Hampshire Hampton: [no additional data] E. F. Williams 1901-9-22
GH: 00614645 Amaranthus albus Linnaeus USA: Maine Fairfield: Fairfield E. F. Williams 1901-8-16
GH: 00614701 Amaranthus albus Linnaeus USA: New Hampshire Rye: Rye E. F. Williams 1901-9-19
NEBC: 00614736 Amaranthus albus Linnaeus USA: Massachusetts Cambridge: Cambridge, Mt. Auburn E. F. Williams 1897-8-28
GH: 00614738 Amaranthus albus Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1908-8-27
NEBC: 00614744 Amaranthus albus Linnaeus USA: Massachusetts Waltham: Waltham E. F. Williams 1895-10-6
NEBC: 00614763 Amaranthus albus Linnaeus USA: Massachusetts Centreville E. F. Williams 1897-9-12
GH: 00614766 Amaranthus albus Linnaeus USA: Massachusetts Centreville E. F. Williams 1897-9-12
GH: 00614791 Amaranthus albus Linnaeus USA: Rhode Island Middleton E. F. Williams 1908-9-12
GH: 00614852 Amaranthus blitoides S. Watson USA: Massachusetts Dedham: Dedham E. F. Williams 6534 1898-10-2
GH: 00614853 Amaranthus blitoides S. Watson USA: Massachusetts Dedham: Dedham E. F. Williams 1898-10-2
NEBC: 00614854 Amaranthus blitoides S. Watson USA: Massachusetts Dedham: Dedham E. F. Williams 1898-10-2
NEBC: 00614855 Amaranthus blitoides S. Watson USA: Massachusetts Dedham: Dedham E. F. Williams 1898-10-2
GH: 00741337 Amaranthus cannabinus (Linnaeus) J. D. Sauer USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
NEBC: 00741340 Amaranthus cannabinus (Linnaeus) J. D. Sauer USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
GH: 00741383 Amaranthus cannabinus (Linnaeus) J. D. Sauer USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
GH: 01928929 Amaranthus cannabinus (Linnaeus) J. D. Sauer USA: New Hampshire Hampton: [no additional data] E. F. Williams 1901-9-22
GH: 01962112 Amaranthus cruentus Linnaeus USA: Massachusetts Natick: So. [South] Natick E. F. Williams 1898-9-18
NEBC: 00614973 Amaranthus hybridus Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1897-8-22
GH: 00614976 Amaranthus hybridus Linnaeus USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
NEBC: 00614977 Amaranthus hybridus Linnaeus USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
GH: 00614888 Amaranthus powellii S. Watson USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-8-12
NEBC: 00614890 Amaranthus powellii S. Watson USA: Massachusetts Weston: Weston E. F. Williams 1897-9-5
NEBC: 00614891 Amaranthus powellii S. Watson USA: Massachusetts Weston: Weston, Riverside E. F. Williams 1897-9-5
GH: 00614943 Amaranthus retroflexus Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-22
NEBC: 00598409 Amaranthus retroflexus Linnaeus USA: Massachusetts Waltham: Waltham E. F. Williams 1 1895-10-6
NEBC: 00598408 Amaranthus retroflexus Linnaeus USA: Massachusetts Scituate: Scituate E. F. Williams 2 1897-9-6
GH: 00592070 Amaranthus tuberculatus (Moquin-Tandon) Sauer USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
Anacardiaceae GH: 00443509 Rhus copallinum Linnaeus USA: Massachusetts Quincy: Babel Rock, Blue Hills Reservation E. F. Williams 1895-9-2
GH: 00752431 Rhus copallinum latifolia Engler USA: Vermont Salisbury: Salisbury E. F. Williams 1908-7-14
GH: 00752434 Rhus copallinum latifolia Engler USA: Vermont Brandon: Brandon E. F. Williams 1904-7-14
NEBC: 00752450 Rhus copallinum latifolia Engler USA: Massachusetts Manchester: Manchester E. F. Williams 1895-8-18
NEBC: 00752452 Rhus copallinum latifolia Engler USA: Massachusetts Rockport: Rockport E. F. Williams 1897-8-15
GH: 00752506 Rhus copallinum latifolia Engler USA: Massachusetts Aquinnah: Aquinnah E. F. Williams 1896-9-25
GH: 00752533 Rhus copallinum latifolia Engler USA: Massachusetts Buckland: Buckland E. F. Williams 1909-8-4
GH: 00415117 Rhus glabra Linnaeus USA: Massachusetts Medford: Little Neck, Middlesex Fells Reserv... E. F. Williams 1895-4-19
GH: 00415118 Rhus glabra Linnaeus USA: Massachusetts Weston: [no additional data] E. F. Williams 1895-11-18
GH: 00415119 Rhus glabra Linnaeus USA: Massachusetts Dedham: [no additional data] E. F. Williams 1895-11-10
GH: 00690846 Rhus glabra Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1895-7-22
NEBC: 00690847 Rhus glabra Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1896-7-31
GH: 00690878 Rhus glabra Linnaeus USA: New Hampshire Norwich E. F. Williams 1910-7-8
GH: 00690927 Rhus glabra Linnaeus USA: Massachusetts Canton: Canton E. F. Williams 1909-8-31
NEBC: 00690935 Rhus glabra Linnaeus USA: Massachusetts Sharon: Sharon E. F. Williams 1896-7-12
NEBC: 00690936 Rhus glabra Linnaeus USA: Massachusetts Sharon: Sharon E. F. Williams 1896-7-12
GH: 00720959 Rhus glabra Linnaeus USA: Rhode Island Cumberland: Cumberland E. F. Williams 1 1903-9-13
NEBC: 00720966 Rhus glabra Linnaeus USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 2 1908-6-17
GH: 00415123 Rhus typhina Linnaeus USA: Massachusetts Medford: Little Neck, Middlesex Fells Reserv... E. F. Williams 1895-4-19
GH: 00690982 Rhus typhina Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-30
NEBC: 00690983 Rhus typhina Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-30
NEBC: 00690985 Rhus typhina Linnaeus USA: New Hampshire Shelburne: Shelburne E. F. Williams 1895-7-25
NEBC: 00690986 Rhus typhina Linnaeus USA: Massachusetts Middlesex Fells Reservation E. F. Williams 1895-10-20
NEBC: 00752565 Rhus typhina Linnaeus USA: Vermont Willoughby E. F. Williams 1898-7-11
NEBC: 00752615 Rhus typhina Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1896-6-28
GH: 00415063 Rhus venenata de Candolle USA: Massachusetts Boston: shores of Muddy [Turtle] Pond. Stony... E. F. Williams 1896-9-13
GH: 00415063 Rhus vernix Linnaeus USA: Massachusetts Boston: shores of Muddy [Turtle] Pond. Stony... E. F. Williams 1896-9-13
GH: 00660536 Toxicodendron radicans (Linnaeus) Kuntze USA: Massachusetts Lexington: Lexington, Lowell St. E. F. Williams 1896-5-30
GH: 00660550 Toxicodendron radicans (Linnaeus) Kuntze USA: Massachusetts Winchester: Winchester E. F. Williams 1895-6-2
GH: 00660549 Toxicodendron radicans (Linnaeus) Kuntze USA: Massachusetts Middlesex Fells Reservation E. F. Williams 1895-12-21
GH: 00660548 Toxicodendron radicans (Linnaeus) Kuntze USA: Massachusetts Boston: Boston E. F. Williams 1895-11-3
GH: 00660579 Toxicodendron radicans (Linnaeus) Kuntze USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
GH: 00660640 Toxicodendron radicans (Linnaeus) Kuntze USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-18
GH: 01869307 Toxicodendron rydbergii (Small ex Rydberg) Greene Canada: New Brunswick Gorge of the Aroostook River E. F. Williams 1901-8-17
GH: 00772311 Toxicodendron rydbergii (Small ex Rydberg) Greene USA: New Hampshire Warren: Warren E. F. Williams 1908-7-24
NEBC: 00752698 Toxicodendron rydbergii (Small ex Rydberg) Greene USA: Vermont Willoughby E. F. Williams 1898-7-18
GH: 00415063 Toxicodendron vernix (Linnaeus) Kuntze USA: Massachusetts Boston: shores of Muddy [Turtle] Pond. Stony... E. F. Williams 1896-9-13
GH: 00772323 Toxicodendron vernix (Linnaeus) Kuntze USA: Massachusetts Concord: Concord, Anursnack hill E. F. Williams 1897-10-24
GH: 00772401 Toxicodendron vernix (Linnaeus) Kuntze USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-17
NEBC: 00772402 Toxicodendron vernix (Linnaeus) Kuntze USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-17
Andreaeaceae NEBC: 00536492 Andreaea rupestris Hedwig USA: New Hampshire Mt. Washington: [no additional data] E. F. Williams 1895-7-10
Apiaceae GH: 00523696 Aethusa cynapium Linnaeus USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
GH: 00483146 Angelica atropurpurea Linnaeus USA: Maine Newry: Newry E. F. Williams 1906-7-24
NEBC: 00483167 Angelica atropurpurea Linnaeus USA: New Hampshire Mt. Washington E. F. Williams 1896-8-8
GH: 00483169 Angelica atropurpurea Linnaeus USA: New Hampshire Mt. Washington E. F. Williams 2 1895-7-11
GH: 00483170 Angelica atropurpurea Linnaeus USA: New Hampshire Mt. Washington E. F. Williams 1 1895-7-11
GH: 00483190 Angelica atropurpurea Linnaeus USA: Vermont Maidstone: Maidstone E. F. Williams 1906-7-26
GH: 00483199 Angelica atropurpurea Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-7
GH: 00483267 Angelica atropurpurea Linnaeus USA: Massachusetts Williamstown: Williamstown E. F. Williams 1901-6-15
GH: 00523754 Carum carvi Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1895-7-22
GH: 00523788 Carum carvi Linnaeus USA: Vermont Weybridge: Weybridge E. F. Williams 1908-5-27
GH: 00523831 Carum carvi Linnaeus USA: Massachusetts Ashfield: Ashfield E. F. Williams 1907-7-3
GH: 00483658 Cicuta bulbifera Linnaeus USA: New Hampshire Wentworth: Wentworth E. F. Williams 1908-7-29
GH: 00483665 Cicuta bulbifera Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-12
GH: 00483666 Cicuta bulbifera Linnaeus USA: New Hampshire Orford: Orford E. F. Williams 1908-8-1
GH: 00483722 Cicuta bulbifera Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1908-8-20
NEBC: 00483735 Cicuta bulbifera Linnaeus USA: Massachusetts Woburn: Woburn, Shaker Glen E. F. Williams 1895-9-1
GH: 01050833 Cicuta maculata Linnaeus USA: Vermont Norwich: Norwich E. F. Williams 1910-7-8
GH: 01050857 Cicuta maculata Linnaeus USA: Massachusetts Cambridge: West Cambridge E. F. Williams 1897-8-28
GH: 01050939 Cicuta maculata Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1909-7-5
GH: 01036071 Coelopleurum lucidum (Linnaeus) Fernald USA: Maine Mount Desert Island E. F. Williams 1899-7-16
GH: 01036074 Coelopleurum lucidum (Linnaeus) Fernald USA: Maine Cranberry Isles: Cranberry Isles E. F. Williams 1899-7-24
GH: 01036010 Coelopleurum lucidum (Linnaeus) Fernald USA: Massachusetts Gloucester: Gloucester E. F. Williams 1897-8-15
GH: 01050958 Conioselinum chinense Britton, Stearn & Poggenburg USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1901-8-15
GH: 01051001 Conioselinum chinense Britton, Stearn & Poggenburg USA: Maine Mount Desert Island E. F. Williams 1910-8-7
GH: 01051003 Conioselinum chinense Britton, Stearn & Poggenburg USA: Maine Mount Desert Island E. F. Williams 1899-7-25
GH: 00523861 Conium maculatum Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-11
NEBC: 01051089 Cryptotaenia canadensis (Linnaeus) de Candolle USA: New Hampshire Alstead: Alstead E. F. Williams 1901-7-27
GH: 01051103 Cryptotaenia canadensis (Linnaeus) de Candolle USA: Vermont Stowe: Stowe E. F. Williams 1897-7-2
NEBC: 01051140 Cryptotaenia canadensis (Linnaeus) de Candolle USA: Massachusetts Boxford: Boxford E. F. Williams 1906-7-15
NEBC: 01051151 Cryptotaenia canadensis (Linnaeus) de Candolle USA: Massachusetts Revere: Revere E. F. Williams 1894-8-19
GH: 01051184 Cryptotaenia canadensis (Linnaeus) de Candolle USA: Massachusetts Williamstown: Williamstown E. F. Williams 1901-6-17
GH: 00447949 Daucus carota Linnaeus USA: Vermont Salisbury: Salisbury E. F. Williams 1908-7-14
NEBC: 00447986 Daucus carota Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1896-8-30
GH: 00447862 Daucus carota Linnaeus USA: Maine Gerrish Island: Gerrish Island E. F. Williams 1895-8-27
GH: 00447874 Daucus carota Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-9
GH: 00448028 Daucus carota Linnaeus USA: Massachusetts Conway: Conway E. F. Williams 1907-7-12
GH: 00448044 Daucus carota Linnaeus USA: Rhode Island Rumford: Rumford E. F. Williams 1903-9-6
GH: 00448052 Daucus carota Linnaeus USA: Rhode Island Wickford: Wickford E. F. Williams 1908-6-17
GH: 00689479 Heracleum maximum W. Bartram USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 00689480 Heracleum maximum W. Bartram USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 01051227 Heracleum maximum W. Bartram USA: Maine Mount Katahdin E. F. Williams 1900-7-9
GH: 01051280 Heracleum maximum W. Bartram USA: New Hampshire Randolph: Randolph E. F. Williams 1896-7-28
GH: 01051285 Heracleum maximum W. Bartram USA: New Hampshire Mount Washington E. F. Williams 1895-7-7
GH: 01051286 Heracleum maximum W. Bartram USA: New Hampshire Mount Washington E. F. Williams 1895-7-8
GH: 01051327 Heracleum maximum W. Bartram USA: Massachusetts Deerfield: Deerfield E. F. Williams 1910-6-17
GH: 01051344 Heracleum maximum W. Bartram USA: Rhode Island Middletown: Middletown E. F. Williams 1908-5-31
GH: 00266457 Heracleum sphondylium Linnaeus USA: Massachusetts Boston: Back Bay E. F. Williams 1910-8-27
GH: 00266457 Heracleum wilhelmsii Fischer & C. A. Meyer USA: Massachusetts Boston: Back Bay E. F. Williams 1910-8-27
GH: 01051480 Hydrocotyle americana Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-3
NEBC: 01051510 Hydrocotyle americana Linnaeus USA: Massachusetts Weston: Weston, Riverside E. F. Williams 1898-8-6
GH: 01051515 Hydrocotyle americana Linnaeus USA: Massachusetts Scituate: Scituate E. F. Williams 1898-7-10
GH: 01051516 Hydrocotyle americana Linnaeus USA: Massachusetts Scituate: Scituate E. F. Williams 1898-9-11
GH: 01051613 Hydrocotyle umbellata Michaux USA: Massachusetts Plymouth: Plymouth E. F. Williams 1910-9-11
GH: 01051646 Hydrocotyle umbellata Michaux USA: Massachusetts Nantucket: Nantucket E. F. Williams 1894-9-8
GH: 01051677 Ligusticum scoticum Linnaeus USA: Maine Mount Desert Island E. F. Williams 1899-7-22
NEBC: 01051683 Ligusticum scoticum Linnaeus USA: Maine Cranberry Isles: Cranberry Isles E. F. Williams 1899-7-20
GH: 01051736 Ligusticum scoticum Linnaeus USA: New Hampshire Rye: Rye E. F. Williams 1901-9-19
NEBC: 01051764 Ligusticum scoticum Linnaeus USA: Massachusetts Marshfield: Marshfield E. F. Williams 1896-10-4
GH: 01051765 Ligusticum scoticum Linnaeus USA: Massachusetts North Scituate E. F. Williams 1897-9-6
GH: 01081102 Osmorhiza claytonii (Michaux) C. B. Clarke USA: New Hampshire Randolph: Randolph E. F. Williams 1 1896-7-31
GH: 01081103 Osmorhiza claytonii (Michaux) C. B. Clarke USA: New Hampshire Randolph: Randolph E. F. Williams 2 1896-8-14
NEBC: 01081139 Osmorhiza claytonii (Michaux) C. B. Clarke USA: Vermont Lemington: Mount Monadnock E. F. Williams 1895-7-28
GH: 01081146 Osmorhiza claytonii (Michaux) C. B. Clarke USA: Vermont Willoughby E. F. Williams 1896-7-18
NEBC: 01081150 Osmorhiza claytonii (Michaux) C. B. Clarke USA: Vermont Willoughby E. F. Williams 1898-6-17
GH: 01081180 Osmorhiza claytonii (Michaux) C. B. Clarke USA: Vermont Brandon: Brandon E. F. Williams 1 1908-5-24
GH: 01009426 Osmorhiza claytonii (Michaux) C. B. Clarke USA: Massachusetts Ashfield: Ashfield E. F. Williams 1907-7-13
NEBC: 01009517 Osmorhiza longistylis (Torrey) de Candolle USA: New Hampshire Walpole: Walpole E. F. Williams 1901-7-28
NEBC: 01009572 Osmorhiza longistylis (Torrey) de Candolle USA: Massachusetts Revere: Revere E. F. Williams 1896-6-28
GH: 01025213 Osmorhiza longistylis (Torrey) de Candolle USA: Rhode Island Middletown: Middletown E. F. Williams 1908-5-31
NEBC: 01025214 Osmorhiza longistylis (Torrey) de Candolle USA: Rhode Island Portsmouth: Portsmouth E. F. Williams 1911-6-18
GH: 00673105 Panax quinquefolius Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1910-7-28
NEBC: 00673120 Panax quinquefolius Linnaeus USA: Vermont Sutton: Sutton E. F. Williams 1894-7-28
NEBC: 00673121 Panax quinquefolius Linnaeus USA: Vermont Willoughby E. F. Williams 1894-7-30
NEBC: 00673123 Panax quinquefolius Linnaeus USA: Vermont Willoughby E. F. Williams 1898-6-17
GH: 01051967 Panax trifolius Linnaeus USA: New Hampshire Jaffrey: Jaffrey E. F. Williams 1898-5-29
NEBC: 01009116 Panax trifolius Linnaeus USA: Massachusetts Norwood: Norwood E. F. Williams 1895-5-19
GH: 00483021 Pastinaca sativa Linnaeus USA: New Hampshire Jefferson: Jefferson E. F. Williams 2 1895-7-31
GH: 00483022 Pastinaca sativa Linnaeus USA: New Hampshire Jefferson: Jefferson E. F. Williams 1 1895-7-31
GH: 00483104 Pastinaca sativa Linnaeus USA: Massachusetts Bourne: Bourne E. F. Williams 1898-8-21
GH: 00483116 Pastinaca sativa Linnaeus USA: Massachusetts Ashfield: Ashfield E. F. Williams 1909-8-8
GH: 00483117 Pastinaca sativa Linnaeus USA: Massachusetts Buckland: Buckland E. F. Williams 1907-7-10
NEBC: 01025302 Ptilimnium capillaceum (Michaux) Rafinesque USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-30
NEBC: 01025303 Ptilimnium capillaceum (Michaux) Rafinesque USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-21
NEBC: 01025304 Ptilimnium capillaceum (Michaux) Rafinesque USA: Massachusetts Nantucket: Nantucket E. F. Williams 1894-9-8
GH: 00750868 Sanicula canadensis Linnaeus USA: Massachusetts Conway: Conway E. F. Williams 1909-8-6
GH: 00483506 Sanicula marilandica Linnaeus USA: Massachusetts Centreville E. F. Williams 1895-6-16
NEBC: 00483507 Sanicula marilandica Linnaeus USA: Massachusetts Centreville E. F. Williams 1896-7-5
GH: 00483554 Sanicula marilandica Linnaeus USA: Rhode Island Wickford E. F. Williams 1908-6-17
GH: 00483283 Sanicula marilandica Linnaeus USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1902-7-16
NEBC: 00483314 Sanicula marilandica Linnaeus USA: Maine Middle Dam E. F. Williams 1903-8-2
GH: 00483372 Sanicula marilandica Linnaeus USA: New Hampshire Wentworth: Wentworth E. F. Williams 1908-7-24
NEBC: 00483407 Sanicula marilandica Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-18
NEBC: 00483455 Sanicula marilandica Linnaeus USA: Massachusetts Magnolia E. F. Williams 1896-6-14
NEBC: 00483475 Sanicula marilandica Linnaeus USA: Massachusetts Winchester: Winchester E. F. Williams 1895-6-2
NEBC: 00483481 Sanicula marilandica Linnaeus USA: Massachusetts Revere: Revere E. F. Williams
NEBC: 00483494 Sanicula marilandica Linnaeus USA: Massachusetts Walpole: Walpole E. F. Williams 1896-6-7
GH: 01025368 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Vermont Norwich: Norwich E. F. Williams 1910-7-8
NEBC: 01025380 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
GH: 01025381 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
GH: 01025386 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Massachusetts Revere: Revere E. F. Williams 1896-6-28
NEBC: 01025390 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Massachusetts Revere: Revere E. F. Williams 1896-6-28
GH: 01025426 Sanicula odorata (Raf.) K.M. Pryer & L.R. Phillippe USA: Connecticut Stratford: Stratford E. F. Williams 1901-6-9
NEBC: 01010230 Sanicula trifoliata E. P. Bicknell USA: Vermont East Middlebury E. F. Williams 1908-7-14
NEBC: 01010294 Sium suave Walter USA: Maine Lincoln: Lincoln E. F. Williams 1903-7-30
GH: 01010304 Sium suave Walter USA: Maine Mount Desert Island E. F. Williams 1899-7-25
GH: 01010365 Sium suave Walter USA: New Hampshire Dummer: Dummer E. F. Williams 1895-7-29
GH: 01009697 Sium suave Walter USA: Massachusetts Weston: Weston E. F. Williams 1894-11-18
GH: 00566028 Zizia aurea (Linnaeus) W. D. J. Koch USA: New Hampshire Warren: Warren E. F. Williams 1908-7-26
GH: 00587006 Zizia aurea (Linnaeus) W. D. J. Koch USA: Vermont Willoughby E. F. Williams 1898-6-9
NEBC: 00587009 Zizia aurea (Linnaeus) W. D. J. Koch USA: Vermont Willoughby E. F. Williams 1898-6-9
GH: 00587056 Zizia aurea (Linnaeus) W. D. J. Koch USA: Massachusetts North Andover: North Andover E. F. Williams 1900-6-3
NEBC: 00587064 Zizia aurea (Linnaeus) W. D. J. Koch USA: Massachusetts Burlington: Burlington E. F. Williams 1 1899-5-14
Apocynaceae GH: 02180670 Amsonia tabernaemontana Walter USA: Massachusetts Boston: Back Bay waste lands E. F. Williams 1903-8-12
NEBC: 01035280 Apocynum cannabinum Linnaeus USA: Massachusetts Weston: Weston E. F. Williams 1898-8-6
GH: 01035477 Apocynum floribundum Greene USA: Massachusetts Weston: Weston E. F. Williams 1898-8-6
GH: 00683378 Periploca graeca Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1911-6-17
NEBC: 00683379 Periploca graeca Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1911-6-17
GH: 00685253 Vinca minor Linnaeus USA: Vermont Wallingford: Wallingford E. F. Williams 1908-5-25
NEBC: 00685261 Vinca minor Linnaeus USA: Massachusetts E. F. Williams 1902-4-20
GH: 00685263 Vinca minor Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1902-4-20
NEBC: 00685288 Vinca minor Linnaeus USA: Rhode Island Portsmouth: Portsmouth E. F. Williams 1911-6-18
Aquifoliaceae NEBC: 00734618 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Gloucester: Gloucester E. F. Williams 1896-6-13
GH: 00734621 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Gloucester: Gloucester E. F. Williams 1896-6-13
GH: 00734656 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Barnstable Town E. F. Williams 8 1896-7-5
GH: 00734658 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
NEBC: 00734660 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Barnstable Town E. F. Williams 1897-4-18
NEBC: 00734661 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Wareham: Wareham E. F. Williams 1 1895-3-31
NEBC: 00441128 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Barnstable Town E. F. Williams 2 1895-6-17
NEBC: 00734666 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-13
GH: 00734667 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-13
NEBC: 00734678 Ilex glabra (Linnaeus) A. Gray USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
NEBC: 00312065 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Boston: Stony Brook Reservation, edge, Muddy... E. F. Williams 1896-9-13
NEBC: 00760873 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Norwood: Norwood E. F. Williams 1897-6-27
GH: 00760874 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Norwood: Norwood E. F. Williams 1897-6-27
NEBC: 00760878 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Walpole: Walpole E. F. Williams 1897-9-26
GH: 00760881 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Walpole: Walpole E. F. Williams 1897-9-26
NEBC: 00760891 Ilex laevigata (Pursh) A. Gray USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1 1901-7-29
GH: 00767436 Ilex laevigata herveyi (Pursh) A. Gray USA: Massachusetts Walpole: Walpole E. F. Williams 1897-9-26
NEBC: 00312080 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Massachusetts Boston: Stony Brook Reservation, edge of Mud... E. F. Williams 1896-8-23
GH: 00767446 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Maine Mount Katahdin E. F. Williams 1900-7-9
GH: 00629938 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: New Hampshire Dixville: Dixville E. F. Williams 1895-7-27
GH: 00713428 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-12-1
NEBC: 00773886 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Vermont Willoughby E. F. Williams 1896-7-25
GH: 00773899 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Vermont Ripton: Ripton E. F. Williams 1908-7-13
GH: 00773908 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Vermont Pownal: Pownal E. F. Williams 1 1901-6-17
NEBC: 00773940 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-14
GH: 00773941 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1896-5-14
NEBC: 00713225 Ilex opaca Aiton USA: Massachusetts Holbrook: Holbrook E. F. Williams 1902-5-30
GH: 00767513 Ilex verticillata (Linnaeus) A. Gray USA: Maine Cranberry Isles: Cranberry Isles E. F. Williams 1899-7-20
GH: 00767823 Ilex verticillata (Linnaeus) A. Gray USA: Vermont Salisbury: Salisbury E. F. Williams 1908-7-14
NEBC: 00713751 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Norwood: Norwood E. F. Williams 1895-6-23
NEBC: 00767877 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Concord: Concord, banks of Assabet river E. F. Williams 1896-9-20
NEBC: 00767888 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Newton: Newton, Riverside By the B.A.A. [Bos... E. F. Williams 1894-10-14
NEBC: 00713638 Ilex verticillata (Linnaeus) A. Gray USA: Massachusetts Marshfield: Marshfield E. F. Williams 1896-10-4
GH: 00687021 Ilex verticillata (Linnaeus) A. Gray USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-17
NEBC: 00312080 Nemopanthus mucronatus (Linnaeus) Trelease USA: Massachusetts Boston: Stony Brook Reservation, edge of Mud... E. F. Williams 1896-8-23
Araceae NEBC: 01009934 Acorus americanus (Rafinesque) Rafinesque USA: Massachusetts Newton: Newton, Riverside, Charles River
E. F. Williams 1897-9-5
GH: 01010626 Acorus calamus Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1896-7-29
GH: 01010652 Acorus calamus Linnaeus USA: Vermont Sudbury: Sudbury E. F. Williams 1908-5-23
GH: 01024616 Acorus calamus Linnaeus USA: Massachusetts Woburn: Woburn, Lexington St. E. F. Williams 1896-5-30
NEBC: 01024617 Acorus calamus Linnaeus USA: Massachusetts Boston: Hyde Park, Readville, Brush Hill roa... E. F. Williams 1895-6-9
GH: 01081805 Arisaema dracontium (Linnaeus) Schott USA: Vermont Weybridge: Weybridge E. F. Williams 1908-7-8
NEBC: 01080156 Arisaema triphyllum (Linnaeus) Schott USA: Vermont Lemington: Mount Monadnock E. F. Williams 1895-7-28
GH: 01010740 Arisaema triphyllum (Linnaeus) Schott USA: Vermont Leicester: Leicester E. F. Williams 1908-5-22
GH: 01010777 Arisaema triphyllum (Linnaeus) Schott USA: Massachusetts Bedford: Bedford E. F. Williams 1 1900-5-13
GH: 01010789 Arisaema triphyllum (Linnaeus) Schott USA: Massachusetts Chestnut Hill [Boston/Brookline/Newton] E. F. Williams 1895-5-30
GH: 01080258 Arisaema triphyllum (Linnaeus) Schott USA: Massachusetts Mount Greylock E. F. Williams 1 1901-6-16
NEBC: 01010832 Arisaema triphyllum (Linnaeus) Schott USA: Rhode Island Cumberland: Cumberland E. F. Williams 1 1904-5-15
NEBC: 01010934 Arisaema triphyllum stewardsonii (Britton) Huttleston USA: New Hampshire Troy: Troy E. F. Williams 1899-5-30
NEBC: 01081877 Calla palustris Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-22
GH: 01081933 Calla palustris Linnaeus USA: New Hampshire Gorham: Gorham E. F. Williams 1895-8-5
GH: 01081938 Calla palustris Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1893-7-28
GH: 01032919 Calla palustris Linnaeus USA: Massachusetts Walpole: Walpole E. F. Williams 1 1896-6-7
GH: 01080084 Calla palustris Linnaeus USA: Massachusetts Billerica: North Billerica E. F. Williams 1900-10-21
GH: 00733794 Orontium aquaticum Linnaeus USA: Connecticut Southington: Southington E. F. Williams 1901-5-30
GH: 00443538 Peltandra undulata Rafinesque USA: Massachusetts Blue Hills Reservation E. F. Williams 1894-9-3
GH: 00443547 Peltandra undulata Rafinesque USA: Massachusetts Billerica: near E. Billerica E. F. Williams 1899-10-8
GH: 00443538 Peltandra virginica (Linnaeus) Rafinesque ex Schott USA: Massachusetts Blue Hills Reservation E. F. Williams 1894-9-3
GH: 00443547 Peltandra virginica (Linnaeus) Rafinesque ex Schott USA: Massachusetts Billerica: near E. Billerica E. F. Williams 1899-10-8
GH: 00219775 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Rhode Island Rumford: E. F. Williams 1904-4-10
GH: 00339821 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Norwood: Purgatory E. F. Williams 1895-4-28
GH: 00339822 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-4-12
NEBC: 00339826 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams
GH: 00339828 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Blue Hills Reservation, Gardners' Swamp E. F. Williams 1894-9-23
GH: 00339829 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Woburn: Shaker Glen E. F. Williams 1895-9-1
NEBC: 00635372 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Billerica: North Billerica E. F. Williams 2 1900-10-21
NEBC: 00635373 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Weston: Weston, N.E. of Doublet Hill E. F. Williams 1895-4-7
NEBC: 00635374 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Weston: Weston, N.E. of Doublet Hill E. F. Williams 1895-4-7
NEBC: 00764323 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Norwood: Norwood E. F. Williams 1895-3-24
Araliaceae GH: 00816734 Aralia hispida Ventenat USA: Maine Mount Agamenticus E. F. Williams 1903-7-17
NEBC: 00816749 Aralia hispida Ventenat USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-25
NEBC: 01036316 Aralia hispida Ventenat USA: New Hampshire Hart's Location: Hart's Location E. F. Williams 1895-7-16
NEBC: 01036358 Aralia hispida Ventenat USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 00816762 Aralia hispida Ventenat USA: Massachusetts Manchester: Manchester E. F. Williams 1895-8-18
GH: 00816794 Aralia hispida Ventenat USA: Massachusetts Norwood: Norwood E. F. Williams 1895-6-23
NEBC: 00816795 Aralia hispida Ventenat USA: Massachusetts Norwood: Norwood E. F. Williams 1895-6-23
GH: 00448346 Aralia nudicaulis Linnaeus USA: Maine Wassataquoik River Valley, McLeod's & Bell C... E. F. Williams 1900-7-16
GH: 00448354 Aralia nudicaulis Linnaeus USA: Maine Mount Desert (Hancock County): Northeast Har... E. F. Williams 1910-8-5
GH: 00448383 Aralia nudicaulis Linnaeus USA: New Hampshire Gorham: Gorham E. F. Williams 1895-8-5
GH: 00448595 Aralia nudicaulis Linnaeus USA: Massachusetts Mt. Greylock E. F. Williams 1901-6-16
NEBC: 00448612 Aralia nudicaulis Linnaeus USA: Rhode Island Lonsdale: Lonsdale E. F. Williams 1904-5-15
GH: 00448450 Aralia nudicaulis Linnaeus USA: Vermont Brandon: Brandon E. F. Williams 1908-5-21
NEBC: 00448497 Aralia nudicaulis Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1895-5-26
GH: 00282046 Aralia racemosa Linnaeus USA: New Hampshire Gordon ridge, Mt. Madison E. F. Williams 1895-7-23
NEBC: 00282049 Aralia racemosa Linnaeus USA: New Hampshire Randolph: E. F. Williams 1897-8-2
GH: 00282060 Aralia racemosa Linnaeus USA: New Hampshire Warren: Breezy Point E. F. Williams 1907-7-22
NEBC: 00282873 Aralia racemosa Linnaeus USA: Vermont Westmore: E. F. Williams 1896-7-26
NEBC: 00282874 Aralia racemosa Linnaeus USA: Vermont Westmore: E. F. Williams 1896-7-26
GH: 00282948 Aralia racemosa Linnaeus USA: Massachusetts Ashfield: E. F. Williams 1907-5-13
GH: 00282968 Aralia racemosa Linnaeus USA: Rhode Island Lincoln: E. F. Williams 1910-10-2
Aristolochiaceae GH: 00642319 Asarum canadense Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-6
GH: 00642361 Asarum canadense Linnaeus USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-5
NEBC: 00642364 Asarum canadense Linnaeus USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-5
GH: 00642398 Asarum canadense Linnaeus USA: Vermont Wallingford: Wallingford E. F. Williams 1908-5-25
GH: 00642445 Asarum canadense Linnaeus USA: Massachusetts Ashfield: Ashfield E. F. Williams 1907-7-3
GH: 00762025 Asarum canadense Linnaeus USA: Massachusetts Williamstown: Williamstown E. F. Williams 1 1901-6-17
GH: 00762037 Asarum canadense Linnaeus USA: Connecticut Southington: Southington E. F. Williams 1 1901-5-30
Asclepiadaceae NEBC: 00375276 Asclepias cornuti Decaisne USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-9-13
GH: 00375308 Asclepias cornuti Decaisne USA: Massachusetts Milton: Hillside St., Blue Hills Reserv. E. F. Williams 1895-6-30
NEBC: 00375259 Asclepias exaltata Linnaeus USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-8-23
NEBC: 00375299 Asclepias exaltata Linnaeus USA: Massachusetts Milton: Randolph Ave., Blue Hills Reserv. E. F. Williams 1895-6-30
NEBC: 00375300 Asclepias exaltata Linnaeus USA: Massachusetts Milton: Randolph Ave., Blue Hills Reserv. E. F. Williams 1895-6-30
NEBC: 01035751 Asclepias exaltata Linnaeus USA: Massachusetts Lincoln: Lincoln E. F. Williams 1896-8-29
GH: 00572667 Asclepias incarnata Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-7
GH: 00572692 Asclepias incarnata Linnaeus USA: Vermont Weybridge: Weybridge E. F. Williams 1908-7-8
GH: 00572694 Asclepias incarnata Linnaeus USA: Vermont Norwich: Norwich E. F. Williams 1910-7-11
GH: 00993398 Asclepias incarnata pulchra (Ehrhart ex Willdenow) Woodson USA: New York Scarsdale E. F. Williams 1906-8-11
NEBC: 00572794 Asclepias incarnata pulchra [delete] (Ehrhart ex Willdenow) Woodson USA: New Hampshire East Jaffrey E. F. Williams 1901-9-2
NEBC: 00572861 Asclepias incarnata pulchra [delete] (Ehrhart ex Willdenow) Woodson USA: Massachusetts Sharon: Sharon E. F. Williams 1896-7-12
GH: 00572880 Asclepias incarnata pulchra [delete] (Ehrhart ex Willdenow) Woodson USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
GH: 00572930 Asclepias incarnata pulchra [delete] (Ehrhart ex Willdenow) Woodson USA: Rhode Island Rumford E. F. Williams 1903-9-6
GH: 00443413 Asclepias incarnata pulchra (Ehrhart ex Willdenow) Persoon USA: Massachusetts Milton: Pine tree pool, Blue Hills Reserv. E. F. Williams 1895-9-2
NEBC: 00375259 Asclepias phytolaccoides G. F. Lyon ex Pursh USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-8-23
NEBC: 00375299 Asclepias phytolaccoides G. F. Lyon ex Pursh USA: Massachusetts Milton: Randolph Ave., Blue Hills Reserv. E. F. Williams 1895-6-30
NEBC: 00375300 Asclepias phytolaccoides G. F. Lyon ex Pursh USA: Massachusetts Milton: Randolph Ave., Blue Hills Reserv. E. F. Williams 1895-6-30
NEBC: 00750178 Asclepias purpurascens Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1896-8-30
GH: 00750185 Asclepias purpurascens Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1895-9-2
NEBC: 00375271 Asclepias quadrifolia Jacquin USA: Massachusetts Milton: Wild Cat notch, Blue Hills Reserv. E. F. Williams 1895-6-9
NEBC: 00375307 Asclepias quadrifolia Jacquin USA: Massachusetts Blue Hills Reservn. E. F. Williams 1895-7-9
NEBC: 00375276 Asclepias syriaca Linnaeus USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-9-13
GH: 00375308 Asclepias syriaca Linnaeus USA: Massachusetts Milton: Hillside St., Blue Hills Reserv. E. F. Williams 1895-6-30
GH: 01036658 Asclepias verticillata Linnaeus USA: Massachusetts Winchester: Winchester, Horn Pond Mt. E. F. Williams 1897-8-21
NEBC: 01036659 Asclepias verticillata Linnaeus USA: Massachusetts Winchester: Winchester, Horn Pond Mt. E. F. Williams 1897-8-21
GH: 01036666 Asclepias verticillata Linnaeus USA: Massachusetts Boston: West Roxbury E. F. Williams 1896-9-13
Asparagaceae GH: 00567426 Asparagus officinalis Linnaeus USA: New Hampshire Walpole: Walpole E. F. Williams 1901-7-28
GH: 00567437 Asparagus officinalis Linnaeus USA: Vermont Brandon: Brandon E. F. Williams 1908-5-23
GH: 00567459 Asparagus officinalis Linnaeus USA: Massachusetts Chestnut Hill E. F. Williams 1 1895-5-30
GH: 00567498 Asparagus officinalis Linnaeus USA: Massachusetts Ded' E. F. Williams 2 1897-8-22
NEBC: 00567467 Asparagus officinalis Linnaeus USA: Massachusetts Readville E. F. Williams 1895-6-9
NEBC: 00567506 Asparagus officinalis Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1895-9-7
GH: 00567460 Asparagus officinalis Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1895-11-10
GH: 00567535 Asparagus officinalis Linnaeus USA: Rhode Island Wickford E. F. Williams 1908-6-17
Aspidiaceae NEBC: 00348033 Aspidium cristatum clintonianum D. C. Eaton USA: Massachusetts Middlesex Fells Reserv. E. F. Williams 1895-10-20
NEBC: 00342660 Aspidium simulatum Davenport USA: Massachusetts Quincy: Cedar swamp, Blue Hills Reservat. E. F. Williams 1895-8-25
NEBC: 00627234 Polystichum acrostichoides (Michaux) Schott USA: New Hampshire Fitzwilliam: Fitzwilliam E. F. Williams 1894-6-18
GH: 00627241 Polystichum acrostichoides (Michaux) Schott USA: New Hampshire Troy: Troy E. F. Williams 1899-5-30
GH: 00627248 Polystichum acrostichoides (Michaux) Schott USA: Vermont Willoughby E. F. Williams 1896-7-25
GH: 00634935 Polystichum acrostichoides (Michaux) Schott USA: Vermont Brandon: Brandon E. F. Williams 1 1908-5-22
NEBC: 00627682 Polystichum acrostichoides (Michaux) Schott USA: Massachusetts Westwood: Westwood E. F. Williams 1901-7-21
GH: 00695516 Polystichum acrostichoides (Michaux) Schott USA: Massachusetts Heath: Heath E. F. Williams 1909-7-17
GH: 00695562 Polystichum acrostichoides (Michaux) Schott USA: Rhode Island Lincoln: Lincoln E. F. Williams 1910-10-2
GH: 00695585 Polystichum acrostichoides (Michaux) Schott USA: Connecticut Lyme: Lyme E. F. Williams 1905-6-17
NEBC: 00627778 Polystichum ée (Spenner) Fée USA: New Hampshire Mount Adams E. F. Williams 1894-7-11
NEBC: 00627800 Polystichum ée (Spenner) Fée USA: New Hampshire Randolph: Randolph E. F. Williams 1896-8-14
NEBC: 00627801 Polystichum ée (Spenner) Fée USA: New Hampshire Randolph: Randolph E. F. Williams 1894-7-11
Aspleniaceae NEBC: 00701033 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Massachusetts Weston: Weston E. F. Williams 1894-11-18
NEBC: 00701040 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Massachusetts Medfield: Medfield E. F. Williams 1894-6-23
GH: 00701083 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Massachusetts Conway: Conway E. F. Williams 1909-7-19
GH: 00681640 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-17
GH: 00681641 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
NEBC: 00681644 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Rhode Island Portsmouth: Portsmouth E. F. Williams 1911-6-18
NEBC: 00681656 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Rhode Island Middleton E. F. Williams 1908-5-31
GH: 00681665 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: Connecticut Lyme: Lyme E. F. Williams 1905-6-17
GH: 02068130 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: New Jersey Sandy Hook [Middletown Township] E. F. Williams 1903-7-8
GH: 02068122 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-17
GH: 00577799 Asplenium rhizophyllum Linnaeus USA: Vermont Brandon: Brandon E. F. Williams 1908-5-21
NEBC: 00701148 Asplenium trichomanes Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-7
NEBC: 00701157 Asplenium trichomanes Linnaeus USA: New Hampshire Peterborough: Peterborough E. F. Williams 1901-9-2
GH: 00701164 Asplenium trichomanes Linnaeus USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-5
NEBC: 00631557 Asplenium trichomanes Linnaeus USA: Massachusetts Weston: Weston E. F. Williams 1894-10-7
GH: 00631575 Asplenium trichomanes Linnaeus USA: Massachusetts Ashfield: Ashfield E. F. Williams 1909-7-19
GH: 00631574 Asplenium trichomanes Linnaeus USA: Massachusetts Colrain: Colrain E. F. Williams 1909-8-4
NEBC: 00668040 Asplenium viride Hudson USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-8
NEBC: 00668043 Asplenium viride Hudson USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-5
Asteraceae NEBC: 00359711 Achillea millefolium Linnaeus USA: Massachusetts Milton: Hillside St., Blue Hills Reserv. E. F. Williams 1895-6-30
GH: 00566721 Achillea millefolium Linnaeus USA: Maine Van Buren: Van Buren E. F. Williams 1901-8-14
GH: 00566750 Achillea millefolium Linnaeus USA: Maine Mount Desert Island: Mount Desert Island E. F. Williams 1897-7-12
GH: 00566840 Achillea millefolium Linnaeus USA: New Hampshire Mount Washington E. F. Williams 1895-7-15
GH: 00566841 Achillea millefolium Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-24
NEBC: 00566854 Achillea millefolium Linnaeus USA: New Hampshire Mount Washington E. F. Williams 1901-8-6
GH: 00566881 Achillea millefolium Linnaeus USA: New Hampshire Hampton: Hampton E. F. Williams 1902-8-31
NEBC: 00566916 Achillea millefolium Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 00566917 Achillea millefolium Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-11
GH: 00566924 Achillea millefolium Linnaeus USA: Vermont Wallingford: Wallingford E. F. Williams 1908-5-25
GH: 00531082 Achillea millefolium Linnaeus USA: Massachusetts Bourne: Bourne E. F. Williams 1898-8-21
NEBC: 00531151 Achillea millefolium Linnaeus USA: Rhode Island Tiverton: Tiverton E. F. Williams 1903-9-27
GH: 00531153 Achillea millefolium Linnaeus USA: Rhode Island Rumford E. F. Williams 1903-9-6
GH: 00753164 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 00753198 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: New Hampshire Crawford E. F. Williams 1895-7-16
GH: 00753224 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: New Hampshire Mount Moosilauke E. F. Williams 1908-8-3
NEBC: 00753232 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: New Hampshire Mount Monadnock E. F. Williams 1901-9-2
GH: 00753297 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: Massachusetts Boxford: Boxford E. F. Williams 1906-8-16
NEBC: 00753305 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: Massachusetts Topsfield: Topsfield E. F. Williams 1903-8-23
NEBC: 00359322 Ageratina aromatica (Linnaeus) Spach USA: Massachusetts Blue Hill [Blue Hills Reservation] E. F. Williams 1895-9-22
NEBC: 00359776 Ageratina aromatica (Linnaeus) Spach USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-8-23
GH: 00359781 Ageratina aromatica (Linnaeus) Spach USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] E. F. Williams 1895-9-22
GH: 00734592 Ageratina aromatica (Linnaeus) Spach USA: Massachusetts Boston: West Roxbury E. F. Williams 1896-8-23
GH: 01023984 Ambrosia artemisiifolia Linnaeus USA: Maine Phillips: Phillips E. F. Williams 1903-8-4
GH: 01066628 Ambrosia artemisiifolia Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-21
NEBC: 01037224 Ambrosia artemisiifolia Linnaeus USA: Massachusetts Manchester: Manchester E. F. Williams 1895-8-18
GH: 01066662 Ambrosia artemisiifolia Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-17
NEBC: 01066663 Ambrosia artemisiifolia Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-17
GH: 01066669 Ambrosia artemisiifolia Linnaeus USA: Vermont Salisbury: Salisbury E. F. Williams 1908-7-14
NEBC: 01037254 Ambrosia artemisiifolia Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1908-8-29
GH: 01037255 Ambrosia artemisiifolia Linnaeus USA: Massachusetts Lincoln: Lexington, near Mt. Tabor [Mt. Tabo... E. F. Williams 1897-9-19
NEBC: 01037283 Ambrosia artemisiifolia Linnaeus USA: Massachusetts Norwood: Norwood E. F. Williams 1895-9-15
GH: 01066676 Ambrosia artemisiifolia Linnaeus USA: Rhode Island Rumford E. F. Williams 1 1903-9-6
GH: 01066677 Ambrosia artemisiifolia Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-12
GH: 01066680 Ambrosia artemisiifolia Linnaeus USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
NEBC: 00566546 Ambrosia trifida Linnaeus USA: Massachusetts Cambridge: Cambridge E. F. Williams 1911-7-1
NEBC: 00566548 Ambrosia trifida Linnaeus USA: Massachusetts Cambridge: Cambridge E. F. Williams 1911-7-1
GH: 00566564 Ambrosia trifida Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1897-6-27
GH: 01066019 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: Maine Rangeley: Rangeley E. F. Williams 1903-8-3
GH: 01065166 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: New Hampshire Randolph: Randolph E. F. Williams 1895-8-3
GH: 01007012 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: New Hampshire Mount Washington E. F. Williams 1897-8-8
NEBC: 01007014 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: New Hampshire Mount Washington E. F. Williams 1897-8-8
GH: 01007069 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: Vermont Hancock: Hancock E. F. Williams 1908-7-7
GH: 01007104 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: Massachusetts Weston: Weston E. F. Williams 1895-9-29
GH: 01065168 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
GH: 01065205 Anaphalis margaritacea (Linnaeus) Bentham & Hooker f. USA: Connecticut Canaan: Canaan E. F. Williams 1341 1897-10-3
NEBC: 01066089 Antennaria howellii canadensis (Greene) Bayer USA: New Hampshire Crawford E. F. Williams 1898-7-1
GH: 01065314 Antennaria howellii canadensis (Greene) Bayer USA: Vermont Willoughby E. F. Williams 1898-6-10
NEBC: 01007307 Antennaria howellii canadensis (Greene) Bayer USA: Massachusetts Wilmington: Wilmington E. F. Williams 2 1899-5-14
NEBC: 01007330 Antennaria howellii canadensis (Greene) Bayer USA: Massachusetts Wellesley: Wellesley E. F. Williams 1898-5-22
GH: 01007410 Antennaria howellii neodioica (Greene) Bayer USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
NEBC: 01053054 Antennaria howellii neodioica (Greene) Bayer USA: Maine Mount Desert Island E. F. Williams 1897-7-14
NEBC: 01053102 Antennaria howellii neodioica (Greene) Bayer USA: New Hampshire Carroll: Carroll E. F. Williams 1 1898-6-20
NEBC: 01053123 Antennaria howellii neodioica (Greene) Bayer USA: New Hampshire Hart's Location: Hart's Location E. F. Williams 1898-7-3
NEBC: 01065504 Antennaria howellii neodioica (Greene) Bayer USA: Vermont Willoughby E. F. Williams 1898-6-9
GH: 01065565 Antennaria howellii neodioica (Greene) Bayer USA: Vermont Willoughby E. F. Williams 1 1898-6-9
NEBC: 01065601 Antennaria howellii neodioica (Greene) Bayer USA: Massachusetts Wilmington: Wilmington E. F. Williams 2 1899-5-14
NEBC: 01065605 Antennaria howellii neodioica (Greene) Bayer USA: Massachusetts Norwood: Norwood E. F. Williams 1895-5-19
NEBC: 01065608 Antennaria howellii neodioica (Greene) Bayer USA: Massachusetts Wellesley: Wellesley E. F. Williams 1898-5-22
NEBC: 01065609 Antennaria howellii neodioica (Greene) Bayer USA: Massachusetts Wellesley: Wellesley E. F. Williams 1 1898-5-22
NEBC: 01007642 Antennaria howellii neodioica (Greene) Bayer USA: Connecticut Manchester: Manchester E. F. Williams 1902
NEBC: 01007874 Antennaria neglecta Greene USA: Massachusetts Wilmington: Wilmington E. F. Williams 1 1899-5-14
GH: 01007881 Antennaria neglecta Greene USA: Massachusetts Dedham: Dedham E. F. Williams 1895-4-28
NEBC: 01007892 Antennaria neglecta Greene USA: Massachusetts Wellesley: Wellesley E. F. Williams 1898-5-22
GH: 01065740 Antennaria parlinii Fernald USA: Massachusetts Burlington: Burlington E. F. Williams 1 1899-5-14
NEBC: 01065741 Antennaria parlinii Fernald USA: Massachusetts Burlington: Burlington E. F. Williams 1899-5-14
GH: 01053644 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: New Hampshire Carroll: Carroll E. F. Williams 1898-6-20
GH: 01065861 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Vermont Willoughby E. F. Williams 1898-6-10
NEBC: 01065863 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Vermont Willoughby E. F. Williams 1898-6-10
GH: 01053682 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Burlington: Burlington E. F. Williams 1899-5-14
NEBC: 01053685 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
NEBC: 01053686 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Natick: Natick E. F. Williams 1 1900-5-20
GH: 01053689 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Reading: Reading E. F. Williams 1898-6-5
NEBC: 01053699 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Wilmington: Wilmington E. F. Williams 1899-5-14
GH: 01053706 Antennaria parlinii fallax (Greene) Bayer & Stebbins USA: Massachusetts Holbrook: Holbrook E. F. Williams 1902-5-30
NEBC: 00443254 Antennaria plantaginea petiolata Fernald USA: Massachusetts Milton: Blue Hills Reserv. Wildcat Notch E. F. Williams 1899-5-21
NEBC: 00443254 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Milton: Blue Hills Reserv. Wildcat Notch E. F. Williams 1899-5-21
NEBC: 01037036 Antennaria plantaginifolia (Linnaeus) Hooker USA: New Hampshire Troy: Troy E. F. Williams 2 1899-5-30
NEBC: 01037037 Antennaria plantaginifolia (Linnaeus) Hooker USA: New Hampshire Fitzwilliam: Fitzwilliam E. F. Williams 1 1898-5-30
NEBC: 01023054 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Weston: Weston E. F. Williams 1898-5-22
NEBC: 01023055 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Wilmington: Wilmington E. F. Williams 1899-5-14
NEBC: 01023060 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Canton: Canton E. F. Williams 1895-5-5
NEBC: 01053463 Antennaria plantaginifolia (Linnaeus) Hooker USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-22
NEBC: 01053347 Antennaria plantaginifolia (Linnaeus) Hooker USA: Rhode Island Clayville E. F. Williams 1907-5-25
GH: 00531269 Anthemis arvensis Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1901-7-4
NEBC: 00531301 Anthemis cotula Linnaeus USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1901-8-16
GH: 00531347 Anthemis cotula Linnaeus USA: Maine Portland: Portland E. F. Williams 1897-7-20
GH: 00531359 Anthemis cotula Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1896-8-1
GH: 00531369 Anthemis cotula Linnaeus USA: New Hampshire Newcastle E. F. Williams 1901-9-19
GH: 00531385 Anthemis cotula Linnaeus USA: Vermont Middlebury: MIddlebury E. F. Williams 1908-7-8
NEBC: 00531425 Anthemis cotula Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1895-8-11
NEBC: 00531477 Anthemis cotula Linnaeus USA: Rhode Island Tiverton: Tiverton E. F. Williams 1903-9-17
GH: 00566167 Arctium lappa Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-24
GH: 00566168 Arctium lappa Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-13
GH: 00566177 Arctium lappa Linnaeus USA: Vermont Westmore: Westmore E. F. Williams 1896-7-18
NEBC: 00566179 Arctium lappa Linnaeus USA: Vermont Westmore: Westmore E. F. Williams 1896-7-26
GH: 00587127 Arctium lappa Linnaeus USA: Vermont Hancock: Hancock E. F. Williams 1908-7-18
GH: 00587129 Arctium lappa Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-14
GH: 00587140 Arctium lappa Linnaeus USA: Massachusetts Waltham: Waltham, near Stony Brook station E. F. Williams 1895-10-6
GH: 00587147 Arctium lappa Linnaeus USA: Massachusetts Boston: Boston, Parker St. E. F. Williams 1898-8-11
NEBC: 00587148 Arctium lappa Linnaeus USA: Massachusetts Boston: Boston E. F. Williams 1898-8-11
GH: 00566194 Arctium lappa Linnaeus USA: Rhode Island Lincoln: Lincoln E. F. Williams 1910-10-2
GH: 00566207 Arctium minus (Hill) Bernhardi USA: Maine Fort Kent: Fort Kent E. F. Williams 1901-8-12
GH: 00566264 Arctium minus (Hill) Bernhardi USA: Massachusetts Manchester: Manchester E. F. Williams 1895-8-18
GH: 00566265 Arctium minus (Hill) Bernhardi USA: Massachusetts Burlington: Burlington E. F. Williams 1898-11-20
NEBC: 00587229 Arctium minus (Hill) Bernhardi USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
GH: 00566305 Arctium minus (Hill) Bernhardi USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
GH: 00725484 Arnica lanceolata Nuttall USA: New Hampshire Thompson and Meserves E. F. Williams 1&2 1893-7-13
GH: 00725486 Arnica lanceolata Nuttall USA: New Hampshire Thompson and Meserves E. F. Williams 3&4 1893-7-30
NEBC: 00725497 Arnica lanceolata Nuttall USA: New Hampshire Mount Washington E. F. Williams 1896-8-8
NEBC: 00725498 Arnica lanceolata Nuttall USA: New Hampshire Mount Washington E. F. Williams 1893-7-13
NEBC: 00725499 Arnica lanceolata Nuttall USA: New Hampshire Mount Washington E. F. Williams 1895-7-11
NEBC: 00725503 Arnica lanceolata Nuttall USA: New Hampshire Mount Washington E. F. Williams 1895-7-11
GH: 00531510 Artemisia absinthium Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-17
GH: 00531511 Artemisia absinthium Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1910-7-23
GH: 00531517 Artemisia absinthium Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-14
GH: 00531540 Artemisia absinthium Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
NEBC: 00531541 Artemisia absinthium Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
GH: 00531616 Artemisia biennis Willdenow USA: Massachusetts Boston: Boston, Massachusetts Ave. E. F. Williams 1895-9-25
NEBC: 00725674 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Rhode Island Tiverton: Tiverton E. F. Williams 1903-9-27
NEBC: 00725603 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: New Hampshire Hampton: Hampton E. F. Williams 2 1902-8-31
NEBC: 00725604 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: New Hampshire Hampton Falls: Hampton Falls E. F. Williams 1 1901-9-22
NEBC: 00725619 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Massachusetts Rockport: Rockport E. F. Williams 2 1898-8-14
NEBC: 00725626 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Massachusetts Revere: Revere E. F. Williams 1 1896-8-22
GH: 00725632 Artemisia campestris caudata (Michaux) H. M. Hall & Clements USA: Massachusetts Marshfield: Marshfield E. F. Williams 1895-10-12
NEBC: 00725588 Artemisia campestris canadensis (Michaux) Scoggan USA: Vermont Sutton: Sutton E. F. Williams 1894-7-25
GH: 00531647 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
GH: 00531648 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
GH: 00531649 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
NEBC: 00531650 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
NEBC: 00531651 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
NEBC: 00531652 Artemisia ludoviciana Nuttall USA: Massachusetts Newbury: Newbury E. F. Williams 1899-8-7
NEBC: 00531676 Artemisia pontica Linnaeus USA: Maine Portland: Portland E. F. Williams 1910-8-3
NEBC: 00531681 Artemisia pontica Linnaeus USA: New Hampshire Walpole: Walpole E. F. Williams 1901-7-28
NEBC: 00531686 Artemisia pontica Linnaeus USA: Massachusetts Tewksbury: near Tewksbury E. F. Williams 1 1899-9-24
GH: 00531687 Artemisia pontica Linnaeus USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1899-9-24
NEBC: 00531688 Artemisia pontica Linnaeus USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1901-6-23
GH: 01234526 Artemisia stelleriana Besser USA: New Jersey Sandy Hook E. F. Williams 1900-6-19
GH: 00531736 Artemisia stelleriana Besser USA: Massachusetts Scituate: Scituate E. F. Williams 2 1898-7-10
GH: 00531737 Artemisia stelleriana Besser USA: Massachusetts Nahant: Nahant E. F. Williams 1 1894-9-16
NEBC: 00531751 Artemisia stelleriana Besser USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-5
NEBC: 00531783 Artemisia stelleriana Besser USA: Rhode Island Middletown: Middletown E. F. Williams 1908-5-30
GH: 00531795 Artemisia stelleriana Besser USA: Rhode Island Middletown: Middletown E. F. Williams 1909-7-4
NEBC: 00531830 Artemisia vulgaris Linnaeus USA: Maine York: York E. F. Williams 1898-7-24
GH: 00531840 Artemisia vulgaris Linnaeus USA: New Hampshire Gorham: Gorham E. F. Williams 1 1903-7-28
GH: 00531844 Artemisia vulgaris Linnaeus USA: New Hampshire Northumberland: Northumberland E. F. Williams 1906-7-29
GH: 00531850 Artemisia vulgaris Linnaeus USA: New Hampshire Stratford: Stratford E. F. Williams 1906-7-28
NEBC: 00531855 Artemisia vulgaris Linnaeus USA: Vermont Westmore: Westmore E. F. Williams 1896-7-26
GH: 00531858 Artemisia vulgaris Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-26
GH: 00531879 Artemisia vulgaris Linnaeus USA: Massachusetts Newburyport: Newburyport E. F. Williams 1898-7-31
GH: 00531895 Artemisia vulgaris Linnaeus USA: Massachusetts Westford: Westford E. F. Williams
GH: 00002822 Aster acuminatus Michaux USA: Massachusetts Lincoln: E. F. Williams 1902-10-5
GH: 00002822 Aster acuminatus subverticillatus Fernald USA: Massachusetts Lincoln: E. F. Williams 1902-10-5
NEBC: 00359818 Aster corymbosus Aiton USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-9-13
GH: 00359421 Aster diffusus Aiton USA: Massachusetts Quincy: near Babel rock, Blue Hills Reservat... E. F. Williams 1895-9-2
NEBC: 00359818 Aster divaricatus Linnaeus USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-9-13
GH: 00359823 Aster dumosus Linnaeus USA: Massachusetts Canton: Base of Big Blue Hill on Blue Hill A... E. F. Williams 1893-10-1
NEBC: 00359934 Aster dumosus Linnaeus USA: Massachusetts Blue Hills Reservation, near Gardner's Swamp E. F. Williams 1894-9-23
GH: 00359823 Aster dumosus strictior Torrey & A. Gray USA: Massachusetts Canton: Base of Big Blue Hill on Blue Hill A... E. F. Williams 1893-10-1
NEBC: 00359836 Aster herveyi A. Gray USA: Massachusetts path up Big Blue Hill, Blue Hills Reservatio... E. F. Williams 1893-10-1
GH: 00872219 Aster junceus Aiton USA: Maine Crystal: Caribou bog. Crystal E. F. Williams 1901-8-19
GH: 00359421 Aster lateriflorus (Linnaeus) Britton USA: Massachusetts Quincy: near Babel rock, Blue Hills Reservat... E. F. Williams 1895-9-2
GH: 01021456 Aster lateriflorus (Linnaeus) Britton USA: Massachusetts Lexington: Lexington E. F. Williams 1893-10-15
GH: 00359421 Aster lateriflorus pendulus (Aiton) E. S. Burgess USA: Massachusetts Quincy: near Babel rock, Blue Hills Reservat... E. F. Williams 1895-9-2
NEBC: 00359436 Aster linariifolius Linnaeus USA: Massachusetts Blue Hills Reserv. Near Gardners Swamp E. F. Williams 1894-9-23
GH: 00443513 Aster macrophyllus Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-25
NEBC: 00359441 Aster nemoralis Aiton USA: Massachusetts Blue Hills Reservn. E. F. Williams 1895-9-22
GH: 00359875 Aster nemoralis Aiton USA: Massachusetts Milton: Houghtons Pond, Blue Hills Reservati... E. F. Williams 1895-9-22
NEBC: 00359442 Aster novae-angliae Linnaeus USA: Massachusetts Canton: Western Base Big Blue Hill [Blue Hil... E. F. Williams 1893-10-1
GH: 00834741 Aster puniceus compactus Fernald USA: Massachusetts Weston: Weston, near Stony Brook Depot E. F. Williams 1895-10-6
NEBC: 00359934 Aster sp. USA: Massachusetts Blue Hills Reservation, near Gardner's Swamp E. F. Williams 1894-9-23
GH: 00834741 Aster sp. USA: Massachusetts Weston: Weston, near Stony Brook Depot E. F. Williams 1895-10-6
GH: 01021498 Aster sp. USA: Massachusetts Wayland: Wayland E. F. Williams 1893-9-10
GH: 01021464 Aster sp. USA: Massachusetts Newton: Newtonville E. F. Williams 1893-9-18
NEBC: 00359479 Aster spectabilis Aiton USA: Massachusetts Quincy: Near Rattlesnake Hill, Blue Hills Re... E. F. Williams 1895-8-25
NEBC: 00359934 Aster vimineus Lamarck USA: Massachusetts Blue Hills Reservation, near Gardner's Swamp E. F. Williams 1894-9-23
NEBC: 01021558 Baccharis halimifolia Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams
NEBC: 01021559 Baccharis halimifolia Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams
GH: 01021564 Baccharis halimifolia Linnaeus USA: Massachusetts Boston: Boston, in Back Bay lands E. F. Williams 1910-9-17
GH: 02214313 Baccharis halimifolia Linnaeus USA: New Jersey Locust: [data not captured] E. F. Williams 1 1900-9-2
NEBC: 00735323 Balsamita major Desfontaines USA: New Hampshire Warren: Warren E. F. Williams 1913-7-14
NEBC: 00735342 Balsamita major Desfontaines USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
NEBC: 01038129 Bidens Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-23
NEBC: 01066708 Bidens beckii Torrey USA: Maine Chesterville: Chesterville E. F. Williams 1902-8-19
GH: 01066777 Bidens beckii Torrey USA: Massachusetts Concord: Concord, Sudbury river E. F. Williams 1908-8-16
GH: 01066778 Bidens beckii Torrey USA: Massachusetts Concord: Concord, Sudbury river E. F. Williams 1908-9-5
GH: 00566626 Bidens bipinnata Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1898-10-2
GH: 00566633 Bidens bipinnata Linnaeus USA: Connecticut Bridgeport: Bridgeport E. F. Williams 1 1897-9-1
GH: 01066825 Bidens cernua Linnaeus USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1 1901-8-18
GH: 01066826 Bidens cernua Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1901-8-12
NEBC: 01066861 Bidens cernua Linnaeus USA: Maine Southwest Harbor: Southwest Harbor E. F. Williams 1908-7-20
GH: 01037332 Bidens cernua Linnaeus USA: Massachusetts Andover: Andover E. F. Williams 1899-9-24
NEBC: 01037349 Bidens cernua Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
GH: 01037350 Bidens cernua Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
GH: 01037351 Bidens cernua Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
NEBC: 01037352 Bidens cernua Linnaeus USA: Massachusetts Concord: Concord, banks of Concord river E. F. Williams 1896-9-20
NEBC: 01037355 Bidens cernua Linnaeus USA: Massachusetts Lincoln: Lexington, near Mt. Tabor [Mt. Tabo... E. F. Williams 1897-9-19
NEBC: 01037362 Bidens cernua Linnaeus USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1899-9-24
NEBC: 00359703 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Quincy: W. of Dome, Blue Hills [Reservation] E. F. Williams 1895-9-2
NEBC: 00359704 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Quincy: W. of Dome, Blue Hills [Reservation] E. F. Williams 1895-9-2
GH: 01037464 Bidens connata Muhlenberg ex Willdenow USA: Maine East Livermore E. F. Williams 1900-9-1
GH: 01037508 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Andover: Andover E. F. Williams 1899-9-24
NEBC: 01037510 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Andover: Andover E. F. Williams 1899-9-24
GH: 01037525 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Cambridge: West Cambridge E. F. Williams 1894-9-29
GH: 01037530 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
GH: 01037531 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Concord: Concord E. F. Williams 1899-9-17
GH: 01037543 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Weston: Weston E. F. Williams 1895-9-29
GH: 01037562 Bidens connata Muhlenberg ex Willdenow USA: Massachusetts Sharon: Sharon E. F. Williams 1899-9-10
GH: 01037640 Bidens connata Muhlenberg ex Willdenow USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
GH: 01037648 Bidens connata Muhlenberg ex Willdenow USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-13
NEBC: 00359704 Bidens connata petiolata (Nuttall) Farwell USA: Massachusetts Quincy: W. of Dome, Blue Hills [Reservation] E. F. Williams 1895-9-2
NEBC: 01038175 Bidens discoidea (Torrey & A. Gray) Britton USA: Massachusetts Boston: Hyde Park, Neponset marshes, Readvil... E. F. Williams 1900-9-23
GH: 01038179 Bidens discoidea (Torrey & A. Gray) Britton USA: Massachusetts Milton: Milton E. F. Williams 3 1900-9-23
NEBC: 01037674 Bidens frondosa Linnaeus USA: Maine Rangeley: Rangeley E. F. Williams 1903-8-4
GH: 01037757 Bidens frondosa Linnaeus USA: New Hampshire Franconia: The Flume E. F. Williams 1908-8-6
GH: 01037760 Bidens frondosa Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1 1908-7-27
GH: 01037791 Bidens frondosa Linnaeus USA: Vermont Montpelier: Montpelier E. F. Williams 1908-7-21
GH: 01037800 Bidens frondosa Linnaeus USA: Massachusetts Andover: Andover E. F. Williams 1899-9-24
NEBC: 01037822 Bidens frondosa Linnaeus USA: Massachusetts Woburn: Woburn, Shaker Glen E. F. Williams 1895-9-1
GH: 01028002 Bidens frondosa Linnaeus USA: Massachusetts Canton: Canton E. F. Williams 1900-9-23
NEBC: 01038275 Bidens frondosa Linnaeus USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
NEBC: 01038277 Bidens frondosa Linnaeus USA: Rhode Island Freetown E. F. Williams 1903-9-27
GH: 01037828 Bidens laevis (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Rowley: Rowley E. F. Williams 1906-9-3
NEBC: 01037847 Bidens laevis (Linnaeus) Britton, Stearn & Poggenburg USA: Massachusetts Dedham: Dedham E. F. Williams 1895-9-8
GH: 01037928 Bidens trichosperma (Michaux) Britton USA: Massachusetts Boston: Neponset Marshes, Readville [Hyde Pa... E. F. Williams 1900-9-23
NEBC: 01037930 Bidens trichosperma (Michaux) Britton USA: Massachusetts Canton: Canton E. F. Williams 1893-10-1
NEBC: 01037934 Bidens trichosperma (Michaux) Britton USA: Massachusetts Dedham: Dedham E. F. Williams 1895-9-8
GH: 01038081 Bidens vulgata Greene USA: Massachusetts Sharon: Sharon E. F. Williams 1899-9-10
NEBC: 01038098 Bidens vulgata Greene USA: Rhode Island Lincoln: Lincoln E. F. Williams 1910-10-2
GH: 00531038 Centaurea nigra Linnaeus USA: Massachusetts Boxford: Boxford E. F. Williams 1899-8-8
NEBC: 00531066 Centaurea nigra Linnaeus USA: Massachusetts Winchester: Winchester E. F. Williams 1896-10-11
GH: 00566321 Centaurea nigra Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1894-8-19
GH: 00566353 Centaurea nigra Linnaeus USA: Rhode Island Middleton E. F. Williams 1909-7-3
GH: 02172673 Centaurea stoebe micranthos (Gugler) Hayek USA: New Jersey [data not captured] E. F. Williams 1900-9-1
NEBC: 00705274 Chrysopsis falcata (Pursh) Elliott USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
NEBC: 00705292 Chrysopsis falcata (Pursh) Elliott USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-12
NEBC: 00705295 Chrysopsis falcata (Pursh) Elliott USA: Massachusetts Falmouth: Falmouth E. F. Williams 1901-7-14
NEBC: 00705294 Chrysopsis falcata (Pursh) Elliott USA: Massachusetts Bourne: Bourne E. F. Williams 1901-9-15
GH: 02216189 Chrysopsis mariana (Linnaeus) Elliott USA: New Jersey Locust: [data not captured] E. F. Williams 1900-9-1
GH: 00587922 Cichorium intybus Linnaeus USA: Maine York: York E. F. Williams 1903-7-20
GH: 00587946 Cichorium intybus Linnaeus USA: Vermont East Middlebury E. F. Williams 1908-7-8
GH: 00587986 Cichorium intybus Linnaeus USA: Massachusetts Waltham: Waltham E. F. Williams 1895-10-6
GH: 00535251 Cichorium intybus Linnaeus USA: Massachusetts Wellesley: Wellesley E. F. Williams 1899-10-1
GH: 00535279 Cichorium intybus Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-12
GH: 00580932 Cirsium arvense (Linnaeus) Scopoli USA: New Hampshire Randolph: Randolph E. F. Williams 1896-7-30
GH: 00580960 Cirsium arvense (Linnaeus) Scopoli USA: Vermont Ripton: Ripton E. F. Williams 1908-7-7
GH: 00580961 Cirsium arvense (Linnaeus) Scopoli USA: Vermont East Middlebury E. F. Williams 1908-7-14
GH: 00580973 Cirsium arvense (Linnaeus) Scopoli USA: Massachusetts Gloucester: Gloucester E. F. Williams 1898-8-14
GH: 00580975 Cirsium arvense (Linnaeus) Scopoli USA: Massachusetts Ipswich: Ipswich E. F. Williams 1899-8-9
GH: 00577021 Cirsium arvense (Linnaeus) Scopoli USA: Rhode Island Middletown: Middletown E. F. Williams 1909-7-3
NEBC: 00580895 Cirsium arvense (Linnaeus) Scopoli USA: Maine Grand Isle: Grand Isle E. F. Williams 1901-8-12
NEBC: 00580897 Cirsium arvense (Linnaeus) Scopoli USA: Maine Portage Lake: Portage Lake E. F. Williams 1901-8-9
GH: 01017635 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Vermont Weybridge: Weybridge E. F. Williams 1908-7-8
GH: 01017636 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Vermont Weybridge: Weybridge E. F. Williams 1908-7-8
GH: 01017646 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Massachusetts E. F. Williams 1896-10-4
GH: 01017649 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Massachusetts Georgetown: Georgetown E. F. Williams 1 1902-8-24
GH: 01017671 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
NEBC: 01017682 Cirsium discolor (Muhlenberg ex Willdenow) Sprengel USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
NEBC: 00638956 Cirsium horridulum Michaux USA: New Hampshire Rye: Rye E. F. Williams 1903-6-14
GH: 00725531 Cirsium horridulum Michaux USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
NEBC: 00725533 Cirsium horridulum Michaux USA: Massachusetts Barnstable Town E. F. Williams 1895-6-16
NEBC: 00725534 Cirsium horridulum Michaux USA: Massachusetts Barnstable Town E. F. Williams 1896-7-5
NEBC: 00725535 Cirsium horridulum Michaux USA: Massachusetts Barnstable Town E. F. Williams 1895-6-16
NEBC: 00725538 Cirsium horridulum Michaux USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-6
GH: 00725562 Cirsium horridulum Michaux USA: Rhode Island Middletown: Middletown E. F. Williams 1909-7-4
GH: 01017745 Cirsium muticum Michaux USA: Maine Baker Island E. F. Williams 1899-7-22
NEBC: 01017761 Cirsium muticum Michaux USA: New Hampshire Crawford E. F. Williams 1895-7-16
GH: 01017773 Cirsium muticum Michaux USA: Vermont Willoughby E. F. Williams 1896-7-22
GH: 01017812 Cirsium muticum Michaux USA: Massachusetts Ashfield: Ashfield E. F. Williams 1909-7-18
GH: 02021355 Cirsium muticum Michaux USA: New Hampshire Crawford E. F. Williams #2 1895-7-15
GH: 02021351 Cirsium muticum Michaux USA: New Hampshire Crawford E. F. Williams #1 1895-7-15
GH: 00359734 Cirsium pumilum (Nuttall) Sprengel USA: Massachusetts Milton: near Houghtons pond, Blue Hills Rese... E. F. Williams 1895-8-11
GH: 01067183 Cirsium pumilum (Nuttall) Sprengel USA: New Hampshire Warren: Warren E. F. Williams 1908-7-28
GH: 01017852 Cirsium pumilum (Nuttall) Sprengel USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
NEBC: 01017857 Cirsium pumilum (Nuttall) Sprengel USA: Massachusetts Falmouth: Falmouth E. F. Williams
GH: 01017885 Cirsium pumilum (Nuttall) Sprengel USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
GH: 00566414 Cirsium vulgare (Savi) Tenore USA: New Hampshire Warren: Warren E. F. Williams 1908-7-28
GH: 00587334 Cirsium vulgare (Savi) Tenore USA: Vermont Ripton: Ripton E. F. Williams 1908-7-11
GH: 00587348 Cirsium vulgare (Savi) Tenore USA: Massachusetts Rockport: Rockport E. F. Williams 1898-8-14
GH: 00587368 Cirsium vulgare (Savi) Tenore USA: Massachusetts North Scituate E. F. Williams 1897-9-6
GH: 00587390 Cirsium vulgare (Savi) Tenore USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-13
GH: 00359734 Cnicus pumilus Torrey USA: Massachusetts Milton: near Houghtons pond, Blue Hills Rese... E. F. Williams 1895-8-11
NEBC: 00638999 Coreopsis grandiflora Hogg ex Sweet USA: Rhode Island Middletown: Middletown E. F. Williams 1911-6-17
GH: 00535301 Coreopsis lanceolata Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1908-6-20
NEBC: 00535316 Coreopsis lanceolata Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
GH: 00535322 Coreopsis lanceolata Linnaeus USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-17
NEBC: 00725810 Coreopsis rosea Nuttall USA: Massachusetts Barnstable Town E. F. Williams 1901-9-15
NEBC: 00680553 Coreopsis rosea Nuttall USA: Massachusetts Winchester: Winchester, Winter Pond E. F. Williams 1894-9-2
NEBC: 00725806 Coreopsis rosea Nuttall USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
NEBC: 00535335 Coreopsis tinctoria Nuttall USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-23
GH: 00675282 Coreopsis tripteris Linnaeus USA: Massachusetts Boston: Boston, Back Bay E. F. Williams 1903-9-3
GH: 00675281 Coreopsis tripteris Linnaeus USA: Massachusetts Boston: Boston, Back Bay E. F. Williams 1903-9-3
GH: 00718108 Cota tinctoria (Linnaeus) J. Gay USA: Maine Mount Desert Island: Mount Desert Island E. F. Williams 1 1899-7-27
GH: 00718130 Cota tinctoria (Linnaeus) J. Gay USA: Massachusetts Plymouth: Plymouth E. F. Williams 1910-9-11
GH: 00718132 Cota tinctoria (Linnaeus) J. Gay USA: Massachusetts Nantucket: Nantucket E. F. Williams 1903-9-20
GH: 01047467 Cyanus segetum Hill USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-13
GH: 01047494 Cyanus segetum Hill USA: Massachusetts Scituate: Scituate E. F. Williams 1898-7-10
NEBC: 01047470 Cyanus segetum Hill USA: Rhode Island Middletown: Middletown E. F. Williams 1911-6-17
NEBC: 00734570 Doellingeria infirma (Michaux) Greene USA: Massachusetts Lincoln: Lincoln E. F. Williams 1896-8-29
NEBC: 00734578 Doellingeria infirma (Michaux) Greene USA: Massachusetts Lincoln: Lincoln E. F. Williams 1898-8-28
NEBC: 00734579 Doellingeria infirma (Michaux) Greene USA: Massachusetts Lincoln: Lincoln E. F. Williams 1896-8-29
GH: 01019347 Doellingeria umbellata (Miller) Nees USA: Maine Fort Kent: Fort Kent E. F. Williams 1901-8-10
NEBC: 01019369 Doellingeria umbellata (Miller) Nees USA: Maine Middle Dam E. F. Williams 1903-8-2
NEBC: 01019437 Doellingeria umbellata (Miller) Nees USA: New Hampshire Randolph: Randolph E. F. Williams 1897-8-2
NEBC: 01019443 Doellingeria umbellata (Miller) Nees USA: New Hampshire Mount Washington E. F. Williams 1 1901-8-4
GH: 00755738 Doellingeria umbellata (Miller) Nees USA: Vermont Willoughby E. F. Williams 1894-7-31
GH: 00566443 Echinops sphaerocephalus Linnaeus USA: Massachusetts Boston: Boston, about Back Bay Fens E. F. Williams 1903-8-12
GH: 00359726 Erechtites hieraciifolius (Linnaeus) Rafinesque ex de Candolle USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
NEBC: 00626704 Erechtites hieraciifolius (Linnaeus) Rafinesque ex de Candolle USA: Massachusetts Boston: Boston, 16 Chestnut St. E. F. Williams 1908-5-13
NEBC: 00626843 Erechtites hieraciifolius (Linnaeus) Rafinesque ex de Candolle USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
GH: 00006586 Erechtites hieraciifolius intermedia Fernald USA: Rhode Island Cumberland: E. F. Williams 1903-9-13
GH: 00359726 Erechtites hieraciifolius intermedia Fernald USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
NEBC: 00359544 Erigeron annuus (Linnaeus) Persoon USA: Massachusetts Milton: Hillside St., Blue Hills Reserv. E. F. Williams 1895-6-30
GH: 00564029 Erigeron annuus (Linnaeus) Persoon USA: Maine Northeast Harbor E. F. Williams 1910-8-5
GH: 00564039 Erigeron annuus (Linnaeus) Persoon USA: New Hampshire Dummer: Dummer E. F. Williams 1895-7-29
GH: 00564042 Erigeron annuus (Linnaeus) Persoon USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-24
NEBC: 00564043 Erigeron annuus (Linnaeus) Persoon USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-24
NEBC: 00564109 Erigeron annuus (Linnaeus) Persoon USA: Massachusetts Revere: Revere E. F. Williams 1896-6-28
GH: 00564146 Erigeron annuus (Linnaeus) Persoon USA: Rhode Island Wickford E. F. Williams 1908-6-17
GH: 00834812 Erigeron canadensis Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1901-8-12
GH: 00834856 Erigeron canadensis Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1895-8-1
GH: 00834864 Erigeron canadensis Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-27
GH: 00834896 Erigeron canadensis Linnaeus USA: Vermont Salisbury: Salisbury E. F. Williams 1908-7-14
GH: 00834909 Erigeron canadensis Linnaeus USA: Massachusetts Manchester: Manchester E. F. Williams 1895-8-18
GH: 00834923 Erigeron canadensis Linnaeus USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-8-26
GH: 01016707 Erigeron canadensis Linnaeus USA: Rhode Island Rumford E. F. Williams 1903-9-6
GH: 01016708 Erigeron canadensis Linnaeus USA: Rhode Island Cumberland: Cumberland E. F. Williams 1903-9-13
NEBC: 00734506 Erigeron hyssopifolius Michaux USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-5
GH: 02352429 Erigeron philadelphicus Linnaeus Canada: New Brunswick [data not captured] E. F. Williams 1901-8-17
GH: 00535880 Erigeron philadelphicus Linnaeus USA: New Hampshire Hanover: Hanover E. F. Williams 1910-7-6
GH: 00535882 Erigeron philadelphicus Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1910-7-20
NEBC: 00535900 Erigeron philadelphicus Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-18
GH: 00535909 Erigeron philadelphicus Linnaeus USA: Vermont Cambridge: Cambridge E. F. Williams 1897-7-8
GH: 00535947 Erigeron philadelphicus Linnaeus USA: Massachusetts Deerfield: Deerfield E. F. Williams 1910-6-17
GH: 00535948 Erigeron philadelphicus Linnaeus USA: Massachusetts Greenfield: Greenfield E. F. Williams 1910-6-17
GH: 01052214 Erigeron pulchellus Michaux USA: New Hampshire Warren: Warren E. F. Williams 1907-7-21
NEBC: 01021991 Erigeron pulchellus Michaux USA: Massachusetts Danvers: Danvers E. F. Williams
NEBC: 01079090 Erigeron pulchellus Michaux USA: Massachusetts Winchester: Winchester E. F. Williams 1895-6-2
GH: 01079191 Erigeron pulchellus Michaux USA: Massachusetts Cumberland E. F. Williams 1 1904-5-15
NEBC: 01079200 Erigeron pulchellus Michaux USA: Rhode Island North Providence: North Providence E. F. Williams 1896-5-18
GH: 01079214 Erigeron pulchellus Michaux USA: Connecticut Lyme: Lyme E. F. Williams 1905-6-17
GH: 02351659 Erigeron strigosus Muhlenberg ex Willdenow Canada: New Brunswick [data not captured] E. F. Williams 1900-7-29
GH: 01052463 Erigeron strigosus Muhlenberg ex Willdenow USA: Maine Phillips: Phillips E. F. Williams 1903-8-4
GH: 01052485 Erigeron strigosus Muhlenberg ex Willdenow USA: New Hampshire Crawford E. F. Williams 1895-7-16
GH: 01052490 Erigeron strigosus Muhlenberg ex Willdenow USA: New Hampshire Randolph: Randolph E. F. Williams 1897-7-23
NEBC: 01079306 Erigeron strigosus Muhlenberg ex Willdenow USA: Massachusetts Norwood: Norwood E. F. Williams 1895-6-23
GH: 01079320 Erigeron strigosus Muhlenberg ex Willdenow USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
GH: 01052510 Erigeron strigosus Muhlenberg ex Willdenow USA: Massachusetts Ashfield: Ashfield E. F. Williams 1907-7-12
GH: 01052540 Erigeron strigosus Muhlenberg ex Willdenow USA: Rhode Island North Kingstown: North Kingstown E. F. Williams 1908-6-18
GH: 01052556 Erigeron strigosus Muhlenberg ex Willdenow USA: Connecticut Hartford: Hartford E. F. Williams 1900-7-10
NEBC: 00359322 Eupatorium aromaticum Linnaeus USA: Massachusetts Blue Hill [Blue Hills Reservation] E. F. Williams 1895-9-22
NEBC: 00359776 Eupatorium aromaticum Linnaeus USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-8-23
GH: 00359781 Eupatorium aromaticum Linnaeus USA: Massachusetts Milton: Blue Hill [Blue Hills Reservation] E. F. Williams 1895-9-22
NEBC: 00753399 Eupatorium hyssopifolium Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-5
NEBC: 00753400 Eupatorium hyssopifolium Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-7
NEBC: 00753402 Eupatorium hyssopifolium Linnaeus USA: Massachusetts Bourne: Bourne E. F. Williams 1901-9-15
NEBC: 00753403 Eupatorium hyssopifolium Linnaeus USA: Massachusetts Cape Cod E. F. Williams 1901-9-15
NEBC: 00359325 Eupatorium perfoliatum Linnaeus USA: Massachusetts Quincy: near Rattlesnake hill, Blue Hills Re... E. F. Williams 1895-8-25
GH: 00753431 Eupatorium perfoliatum Linnaeus USA: Maine Mount Desert (Hancock County): Mount Desert E. F. Williams 1910-8-4
GH: 00753475 Eupatorium perfoliatum Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1896-8-3
GH: 01034038 Eupatorium perfoliatum Linnaeus USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-12
GH: 00359785 Eupatorium pilosum Walter USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-9-18
GH: 01034075 Eupatorium pilosum Walter USA: Massachusetts Concord: Concord E. F. Williams 1908-8-29
ECON: 01034093 Eupatorium pilosum Walter USA: Massachusetts Canton: Canton E. F. Williams 1893-10-1
NEBC: 01034100 Eupatorium pilosum Walter USA: Massachusetts Norwood: Norwood E. F. Williams 1897-8-22
GH: 01034102 Eupatorium pilosum Walter USA: Massachusetts Plymouth: Plymouth E. F. Williams 1898-8-21
NEBC: 01034133 Eupatorium pilosum Walter USA: Massachusetts Bourne: Bourne E. F. Williams 1901-9-15
GH: 01034152 Eupatorium pilosum Walter USA: Massachusetts Nantucket: Nantucket E. F. Williams 1903-9-19
NEBC: 01034155 Eupatorium pilosum Walter USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-29
NEBC: 01034154 Eupatorium pilosum Walter USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-23
GH: 01034163 Eupatorium pilosum Walter USA: Massachusetts E. F. Williams
GH: 02190037 Eupatorium pilosum Walter USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-1
NEBC: 01034250 Eupatorium pubescens Muhlenberg ex Willdenow USA: Massachusetts Concord: Concord E. F. Williams 3397 1908-8-29
GH: 00359355 Eupatorium purpureum Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-25
NEBC: 00359356 Eupatorium purpureum Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
NEBC: 00359357 Eupatorium purpureum Linnaeus USA: Massachusetts Newton: Hammond pond E. F. Williams 1895-11-3
GH: 00359355 Eupatorium purpureum maculatum (Linnaeus) Darlington USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-25
NEBC: 00359356 Eupatorium purpureum maculatum (Linnaeus) Darlington USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
GH: 02190293 Eupatorium rotundifolium Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-1
GH: 00359785 Eupatorium rotundifolium ovatum (Bigelow) Torrey ex de Candolle USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-9-18
GH: 01034287 Eupatorium sessilifolium Linnaeus USA: Massachusetts Concord: Concord, Conantum E. F. Williams 1908-8-9
NEBC: 01034297 Eupatorium sessilifolium Linnaeus USA: Massachusetts Winchester: Winchester E. F. Williams 1897-8-21
NEBC: 01034298 Eupatorium sessilifolium Linnaeus USA: Massachusetts Winchester: Winchester E. F. Williams 1897-8-21
GH: 00359785 Eupatorium verbenifolium Michaux USA: Massachusetts Boston: Stony Brook Reservation [Hyde Park/W... E. F. Williams 1896-9-18
NEBC: 00359356 Eupatorium verticillatum Lamarck USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
NEBC: 00359818 Eurybia divaricata (Linnaeus) G. L. Nesom USA: Massachusetts Boston: Stony Brook Reserv. [Hyde Park/West ... E. F. Williams 1896-9-13
GH: 01019650 Eurybia divaricata (Linnaeus) G. L. Nesom USA: Massachusetts Acton: South Acton E. F. Williams 1908-9-6
NEBC: 00359836 Eurybia herveyi (A. Gray) G. L. Nesom USA: Massachusetts path up Big Blue Hill, Blue Hills Reservatio... E. F. Williams 1893-10-1
GH: 00443513 Eurybia macrophylla (Linnaeus) Cassini USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-25
GH: 00574355 Eurybia macrophylla (Linnaeus) Cassini USA: New Hampshire Gorham: Gorham E. F. Williams 1895-8-5
NEBC: 00568002 Eurybia macrophylla (Linnaeus) Cassini USA: New Hampshire Jaffrey: Jaffrey E. F. Williams 1901-9-2
NEBC: 00574434 Eurybia macrophylla (Linnaeus) Cassini USA: Massachusetts Readville: Readville E. F. Williams 1900-9-23
NEBC: 01015006 Eurybia radula (Aiton) G. L. Nesom USA: Massachusetts Concord: Concord E. F. Williams 1 1908-8-29
NEBC: 01015022 Eurybia radula (Aiton) G. L. Nesom USA: Massachusetts Wayland: Wayland E. F. Williams 1893-9-10
NEBC: 00359479 Eurybia spectabilis (Aiton) G. L. Nesom USA: Massachusetts Quincy: Near Rattlesnake Hill, Blue Hills Re... E. F. Williams 1895-8-25
GH: 01052649 Euthamia graminifolia (Linnaeus) Nuttall USA: Maine Rangeley: Rangeley E. F. Williams 1903-8-4
GH: 01052799 Euthamia graminifolia (Linnaeus) Nuttall USA: New Hampshire Franconia: Near Profile House farm E. F. Williams 1894-8-4
GH: 01055075 Euthamia graminifolia (Linnaeus) Nuttall USA: Massachusetts Cohasset: Cohasset E. F. Williams 1901-8-25
GH: 01079663 Euthamia tenuifolia USA: Massachusetts Sharon: Sharon E. F. Williams 1899-9-10
NEBC: 01079664 Euthamia tenuifolia USA: Massachusetts Sharon: Sharon E. F. Williams 1897-10-17
GH: 01079715 Euthamia tenuifolia USA: Massachusetts Nantucket: Nantucket E. F. Williams 1894-9-8
NEBC: 01079729 Euthamia tenuifolia USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
NEBC: 01079736 Euthamia tenuifolia USA: Massachusetts Bourne: Bourne E. F. Williams 1901-9-15
GH: 01079739 Euthamia tenuifolia USA: Massachusetts Bourne: Bourne E. F. Williams 1901-9-15
GH: 01079781 Euthamia tenuifolia USA: Rhode Island Middletown: Middletown E. F. Williams 1908-9-13
GH: 00359355 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-25
NEBC: 00359356 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-8-11
GH: 01034858 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Cohasset: Cohasset E. F. Williams 1901-8-25
GH: 01034859 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Cohasset: Cohasset E. F. Williams 1901-8-25
GH: 01034860 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
GH: 01034861 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
GH: 01034921 Eutrochium dubium (Willdenow ex Poiret) E. E. Lamont USA: Rhode Island Rumford E. F. Williams 1903-9-6
GH: 01019113 Eutrochium maculatum (Linnaeus) E. E. Lamont USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 01019114 Eutrochium maculatum (Linnaeus) E. E. Lamont USA: Vermont Ripton: Ripton E. F. Williams 1908-7-17
NEBC: 01019166 Eutrochium maculatum foliosum (Fernald) E. E. Lamont USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1901-8-15
GH: 01019167 Eutrochium maculatum foliosum (Fernald) E. E. Lamont USA: Maine Fort Fairfield: Fort Fairfield E. F. Williams 1901-8-15
NEBC: 00535359 Galinsoga parviflora Cavanilles USA: Massachusetts Boston: Boston, front yard on Columbus Ave. E. F. Williams 1894-10-9
GH: 00535393 Galinsoga quadriradiata Ruiz & Pavon USA: Maine Northeast Harbor E. F. Williams 1910-8-5
NEBC: 00535460 Galinsoga quadriradiata Ruiz & Pavon USA: Massachusetts Newton: Newton E. F. Williams 1897-10-23
GH: 00535464 Galinsoga quadriradiata Ruiz & Pavon USA: Massachusetts Weston: Weston, near B.A.A. [Boston Athletic... E. F. Williams 1894-10-7
GH: 00535471 Galinsoga quadriradiata Ruiz & Pavon USA: Massachusetts Boston: Boston E. F. Williams 1894
GH: 00535508 Galinsoga quadriradiata Ruiz & Pavon USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
GH: 00535509 Galinsoga quadriradiata Ruiz & Pavon USA: Rhode Island Newport: Newport E. F. Williams 1908-9-12
NEBC: 00359695 Gnaphalium polycephalum Michaux USA: Massachusetts Quincy: Rattlesnake hill, Blue Hills Reserva... E. F. Williams 1895-8-25
GH: 01053813 Gnaphalium uliginosum Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1901-8-12
GH: 01053814 Gnaphalium uliginosum Linnaeus USA: Maine Mount Azizcohos E. F. Williams 3 1903-7-31
GH: 01053815 Gnaphalium uliginosum Linnaeus USA: Maine Frenchville: Frenchville E. F. Williams 2 1901-8-12
NEBC: 01053828 Gnaphalium uliginosum Linnaeus USA: Maine Rangeley: Rangeley E. F. Williams 1 1903-8-4
GH: 01053887 Gnaphalium uliginosum Linnaeus USA: New Hampshire Randolph: Randolph E. F. Williams 1895-7-21
GH: 01066733 Gnaphalium uliginosum Linnaeus USA: New Hampshire Dummer: Dummer E. F. Williams 1895-7-29
GH: 01053888 Gnaphalium uliginosum Linnaeus USA: New Hampshire Crawford E. F. Williams 1895-7-15
GH: 01053944 Gnaphalium uliginosum Linnaeus USA: Vermont Ripton: Ripton E. F. Williams 1908-7-4
GH: 01053972 Gnaphalium uliginosum Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1908-8-9
GH: 01053973 Gnaphalium uliginosum Linnaeus USA: Massachusetts Concord: Concord E. F. Williams 1898-8-28
GH: 01008849 Helenium autumnale Linnaeus USA: Massachusetts Holyoke: Holyoke E. F. Williams 1905
GH: 00535551 Helianthus annuus Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-24
NEBC: 00535570 Helianthus annuus Linnaeus USA: Massachusetts Dedham: Dedham E. F. Williams 1897-8-22
GH: 00535572 Helianthus annuus Linnaeus USA: Massachusetts Nahant: Nahant E. F. Williams 1894-9-16
GH: 00535573 Helianthus annuus Linnaeus USA: Massachusetts E. F. Williams 1895-10-27
GH: 00535574 Helianthus annuus Linnaeus USA: Massachusetts Quincy: Quincy E. F. Williams 1904-9-6
GH: 01038464 Helianthus decapetalus Linnaeus USA: New Hampshire Wentworth: Wentworth E. F. Williams 1908-7-29
GH: 01037972 Helianthus divaricatus Linnaeus USA: Massachusetts Rockport: Rockport E. F. Williams 1897-8-15
NEBC: 01037999 Helianthus divaricatus Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1896-8-30
GH: 01008160 Helianthus luxurians E. Watson USA: Vermont Norwich: Norwich E. F. Williams 1910-7-8
GH: 00535640 Helianthus petiolaris Nuttall USA: Maine Dedham: Dedham E. F. Williams 1898-10-2
GH: 00443290 Helianthus strumosus Linnaeus USA: Massachusetts big Blue hill, Blue Hills Reserv. E. F. Williams 1895-9-22
GH: 01017036 Helianthus strumosus Linnaeus USA: Maine Cutts E. F. Williams 1895-8-26
GH: 01017071 Helianthus strumosus Linnaeus USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-8-26
NEBC: 01017079 Helianthus strumosus Linnaeus USA: Massachusetts Revere: Revere E. F. Williams 1896-8-30
GH: 01017092 Helianthus strumosus Linnaeus USA: Massachusetts Wellesley: Wellesley E. F. Williams 1897-8-29
GH: 00535664 Helianthus tuberosus Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1910-7-31
GH: 00535676 Helianthus tuberosus Linnaeus USA: Massachusetts Lincoln: Lexington, Mt. Tabor [Mt. Tabor is ... E. F. Williams 1897-9-19
GH: 00535677 Helianthus tuberosus Linnaeus USA: Massachusetts Lexington: Lexington, Mt. Tabor [Mt. Tabor i... E. F. Williams 1897-9-19
NEBC: 00535678 Helianthus tuberosus Linnaeus USA: Massachusetts Lexington: Lexington, Mt. Tabor [Mt. Tabor i... E. F. Williams 1897-9-19
GH: 00535790 Heliopsis helianthoides scabra (Dunal) Fernald USA: New Hampshire Warren: Warren E. F. Williams 1910-7-28
GH: 00535803 Heliopsis helianthoides scabra (Dunal) Fernald USA: Massachusetts Ashfield: Ashfield E. F. Williams 1908-7-12
NEBC: 00587423 Hieracium aurantiacum Linnaeus USA: New Hampshire Errol: Errol E. F. Williams 1903-7-29
NEBC: 00587452 Hieracium aurantiacum Linnaeus USA: New Hampshire Rye: Rye E. F. Williams 1903-6-14
GH: 00587466 Hieracium aurantiacum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-20
GH: 00587467 Hieracium aurantiacum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-26
NEBC: 00587470 Hieracium aurantiacum Linnaeus USA: Vermont Willoughby E. F. Williams 1896-7-19
GH: 00587500 Hieracium aurantiacum Linnaeus USA: Massachusetts Georgetown: South Georgetown E. F. Williams 1 1902-8-24
GH: 00587531 Hieracium aurantiacum Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
NEBC: 00587532 Hieracium aurantiacum Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-7-4
GH: 00587556 Hieracium aurantiacum Linnaeus USA: Massachusetts Plainfield: Plainfield E. F. Williams 1907-6-19
GH: 00587569 Hieracium aurantiacum Linnaeus USA: Massachusetts Williamstown: Williamstown E. F. Williams 1901-6-17
GH: 00587596 Hieracium caespitosum Dumortier USA: Maine Van Buren: Van Buren E. F. Williams 1900-7-19
NEBC: 00587597 Hieracium caespitosum Dumortier USA: Maine Van Buren: Van Buren E. F. Williams 1900-7-19
GH: 01067263 Hieracium gronovii Linnaeus USA: Massachusetts Norwood: Norwood E. F. Williams 1898-10-2
NEBC: 01067295 Hieracium gronovii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1897-9-12
NEBC: 01067297 Hieracium gronovii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
NEBC: 01067298 Hieracium gronovii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
NEBC: 01067299 Hieracium gronovii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1897-9-12
NEBC: 01067302 Hieracium gronovii Linnaeus USA: Massachusetts Bourne: Bourne E. F. Williams 1 1901-9-15
NEBC: 01067321 Hieracium gronovii Linnaeus USA: Massachusetts Falmouth: Falmouth E. F. Williams 1911-7-14
NEBC: 01028814 Hieracium gronovii Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-21
NEBC: 01028815 Hieracium gronovii Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-21
NEBC: 01028816 Hieracium gronovii Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-21
NEBC: 01028817 Hieracium gronovii Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1911-7-21
NEBC: 01028821 Hieracium gronovii Linnaeus USA: Massachusetts Nantucket: Nantucket E. F. Williams 1903-9-20
GH: 01831985 Hieracium gronovii Linnaeus USA: New Jersey [data not captured] E. F. Williams 1 1900-9-1
GH: 01028856 Hieracium kalmii Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-8-1
GH: 00833224 Hieracium kalmii Linnaeus USA: Maine Kittery: Kittery E. F. Williams 1895-8-27
GH: 00833246 Hieracium kalmii Linnaeus USA: New Hampshire Warren: Warren E. F. Williams 1908-7-28
NEBC: 00833310 Hieracium kalmii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
GH: 00833311 Hieracium kalmii Linnaeus USA: Massachusetts Barnstable Town E. F. Williams 1896-9-6
GH: 00833352 Hieracium kalmii Linnaeus USA: Rhode Island Lincoln: Lincoln E. F. Williams 1910-10-2
GH: 01832405 Hieracium lachenalii C. C. Gmelin Canada: Quebec Province [data not captured] E. F. Williams 1902-8-6
NEBC: 00833375 Hieracium maculatum Smith USA: Maine Twin Brooks E. F. Williams 1900-7-28
NEBC: 00359741 Hieracium marianum Willdenow USA: Massachusetts Blue Hills Reservation E. F. Williams 1895-6-30
