Aceraceae 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: 00677737 Acer saccharinum Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
GH: 00663283 Acer saccharum Marshall USA: Massachusetts Wayland: Wayland E. F. Williams 2 1900-5-20
Alismataceae NEBC: 01080365 Sagittaria engelmanniana J. G. Smith USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
Amaranthaceae GH: 00614888 Amaranthus powellii S. Watson USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-8-12
Apiaceae GH: 01051227 Heracleum maximum W. Bartram USA: Maine Mount Katahdin E. F. Williams 1900-7-9
GH: 00587056 Zizia aurea (Linnaeus) W. D. J. Koch USA: Massachusetts North Andover: North Andover E. F. Williams 1900-6-3
Aquifoliaceae GH: 00767446 Ilex mucronata (Linnaeus) M. Powell, Savolainen & S. Andrews USA: Maine Mount Katahdin E. F. Williams 1900-7-9
Araceae GH: 01010777 Arisaema triphyllum (Linnaeus) Schott USA: Massachusetts Bedford: Bedford E. F. Williams 1 1900-5-13
NEBC: 01081877 Calla palustris Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-22
GH: 01080084 Calla palustris Linnaeus USA: Massachusetts Billerica: North Billerica E. F. Williams 1900-10-21
NEBC: 00635372 Symplocarpus foetidus (Linnaeus) Salisbury ex W. P. C. Barton USA: Massachusetts Billerica: North Billerica E. F. Williams 2 1900-10-21
Araliaceae GH: 00448346 Aralia nudicaulis Linnaeus USA: Maine Wassataquoik River Valley, McLeod's & Bell C... E. F. Williams 1900-7-16
Aspleniaceae GH: 02068122 Asplenium platyneuron (Linnaeus) Britton, Sterns & Poggenburg USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-17
Asteraceae GH: 00753164 Ageratina altissima (Linnaeus) R. M. King & H. Robinson USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 01007410 Antennaria howellii neodioica (Greene) Bayer USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
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: 01234526 Artemisia stelleriana Besser USA: New Jersey Sandy Hook E. F. Williams 1900-6-19
GH: 02214313 Baccharis halimifolia Linnaeus USA: New Jersey Locust: [data not captured] E. F. Williams 1 1900-9-2
GH: 01037464 Bidens connata Muhlenberg ex Willdenow USA: Maine East Livermore E. F. Williams 1900-9-1
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
GH: 01028002 Bidens frondosa Linnaeus USA: Massachusetts Canton: Canton E. F. Williams 1900-9-23
GH: 01037928 Bidens trichosperma (Michaux) Britton USA: Massachusetts Boston: Neponset Marshes, Readville [Hyde Pa... E. F. Williams 1900-9-23
GH: 02172673 Centaurea stoebe micranthos (Gugler) Hayek USA: New Jersey [data not captured] E. F. Williams 1900-9-1
GH: 02216189 Chrysopsis mariana (Linnaeus) Elliott USA: New Jersey Locust: [data not captured] E. F. Williams 1900-9-1
GH: 00834923 Erigeron canadensis Linnaeus USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-8-26
GH: 02351659 Erigeron strigosus Muhlenberg ex Willdenow Canada: New Brunswick [data not captured] E. F. Williams 1900-7-29
GH: 01052556 Erigeron strigosus Muhlenberg ex Willdenow USA: Connecticut Hartford: Hartford E. F. Williams 1900-7-10
GH: 02190037 Eupatorium pilosum Walter USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-1
GH: 02190293 Eupatorium rotundifolium Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-1
NEBC: 00574434 Eurybia macrophylla (Linnaeus) Cassini USA: Massachusetts Readville: Readville E. F. Williams 1900-9-23
GH: 01017071 Helianthus strumosus Linnaeus USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-8-26
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: 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
NEBC: 00833375 Hieracium maculatum Smith USA: Maine Twin Brooks E. F. Williams 1900-7-28
NEBC: 01028913 Hieracium scabrum Michaux USA: New Hampshire White Mountains E. F. Williams 1900
GH: 01833173 Hieracium venosum Linnaeus USA: New Jersey Locust: [data not captured] E. F. Williams 1900-6-17
NEBC: 01070105 Lactuca canadensis Linnaeus USA: New Hampshire E. F. Williams 1900
GH: 01834367 Lactuca canadensis Linnaeus USA: New Jersey Locust: [data not captured] E. F. Williams 1900-9-1
GH: 00626192 Lactuca serriola Linnaeus USA: Massachusetts Boston: Boston E. F. Williams 1900-8-24
GH: 01835177 Lapsana communis Linnaeus USA: New Jersey [data not captured] E. F. Williams 1900-6-17
NEBC: 01069074 Nabalus trifoliolatus Cassini USA: Massachusetts Wilmington E. F. Williams 1900-8-26
GH: 01028264 Packera paupercula (Michaux) A. Löve & D. Löve USA: Maine Mount Katahdin E. F. Williams 1900-7-16
NEBC: 01023209 Pseudognaphalium macounii (Greene) Kartesz USA: Massachusetts Burlington: Burlington gorge E. F. Williams 1900-8-26
GH: 01023210 Pseudognaphalium macounii (Greene) Kartesz USA: Massachusetts Burlington: Burlington gorge E. F. Williams 1900-8-26
GH: 00578920 Silphium perfoliatum Linnaeus USA: Massachusetts Boston: Boston, edge of Back Bay Fens E. F. Williams 1900-8-24
GH: 01054580 Solidago hispida Muhlenberg ex Willdenow USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
GH: 01054581 Solidago hispida Muhlenberg ex Willdenow USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-21
GH: 01054935 Solidago macrophylla Pursh USA: Maine Madawaska Lake E. F. Williams 1 1900-8-2
GH: 01056849 Solidago uliginosa Nuttall USA: Maine New Sweden: New Sweden E. F. Williams 1900-8-2
NEBC: 00626243 Sonchus arvensis Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-2
NEBC: 01031254 Symphyotrichum novi-belgii (Linnaeus) G. L. Nesom USA: Massachusetts Canton: Canton E. F. Williams 1 1900-9-23
GH: 01014592 Symphyotrichum racemosum (Elliott) G. L. Nesom USA: Connecticut Bloomfield: Bloomfield E. F. Williams 1900-9-25
NEBC: 00638967 Tanacetum bipinnatum huronense (Nuttall) Breitung USA: Maine Allagash: Allagash E. F. Williams 1900-7-27
NEBC: 00638968 Tanacetum bipinnatum huronense (Nuttall) Breitung USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
GH: 00638972 Tanacetum bipinnatum huronense (Nuttall) Breitung USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 00638975 Tanacetum bipinnatum huronense (Nuttall) Breitung USA: Maine St. John E. F. Williams 1900-7-23
Athyriaceae NEBC: 00746390 Cystopteris tenuis (Michaux) Desvaux USA: Maine Frenchville: Frenchville E. F. Williams 1 1900-7-20
Bartramiaceae NEBC: 00824817 Philonotis fontana (Hedwig) Bridel USA: Maine [data not captured] E. F. Williams 1900
Betulaceae NEBC: 00636748 Betula alleghaniensis Britton USA: Massachusetts Burlington: Burlington E. F. Williams 1 1900-5-6
NEBC: 00634019 Betula cordifolia Regel USA: Maine Wells: Wells E. F. Williams 1900-8-23
GH: 00634020 Betula cordifolia Regel USA: Maine Wells: Wells E. F. Williams 1900-8-23
NEBC: 00678883 Betula glandulosa Michaux USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
GH: 00678940 Betula glandulosa Michaux USA: Maine Mount Katahdin E. F. Williams 1900-7-11
GH: 00678965 Betula nigra Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
NEBC: 00678967 Betula nigra Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
GH: 00627167 Betula papyrifera Marshall USA: Massachusetts Billerica: No. [North] Billerica E. F. Williams 1900-10-21
GH: 00627935 Corylus americana Walter USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-4-21
NEBC: 00727618 Corylus cornuta Marshall USA: Massachusetts Burlington: Burlington E. F. Williams 1 1900-4-22
Bignoniaceae GH: 02054798 Catalpa speciosa Teas USA: New Jersey Locust, N. J. E. F. Williams 1900-6-18
Brassicaceae GH: 00992643 Arabidopsis lyrata (Linnaeus) O'Kane & Al-Shehbaz USA: New Jersey Sandy Hook [Middleton Township] E. F. Williams 1900-6-19
GH: 00295968 Arabis canadensis Linnaeus USA: Massachusetts Blue Hills Res. [Reservation] E. F. Williams 1900-6-25
GH: 00348308 Armoracia lapathifolia Gilibert USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00348308 Armoracia rusticana G. Gaertner, B. Meyer & Scherbius USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00974834 Barbarea verna (Miller) Ascherson USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-4-18
GH: 00295968 Boechera canadensis (Linnaeus) Al-Shehbaz USA: Massachusetts Blue Hills Res. [Reservation] E. F. Williams 1900-6-25
GH: 00558760 Cardamine pensylvanica Muhlenberg ex Willdenow USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
GH: 00579112 Cardamine pensylvanica Muhlenberg ex Willdenow USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
GH: 00348308 Radicula armoracea (Linnaeus) B. L. Robinson USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00582544 Sinapis arvensis Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1900-6-24
Cactaceae GH: 01875679 Opuntia humifusa (Rafinesque) Rafinesque USA: New Jersey Locust E. F. Williams 1 1900-6-18
GH: 01875680 Opuntia humifusa (Rafinesque) Rafinesque USA: New Jersey Locust E. F. Williams 2 1900-9-1
GH: 01875682 Opuntia humifusa (Rafinesque) Rafinesque USA: New Jersey Sandy Hook E. F. Williams 1900-6-19
Caesalpiniaceae GH: 01852589 Chamaecrista nictitans (Linnaeus) Moench USA: New Jersey Locust [Middleton Township] E. F. Williams 1900-9-2
Campanulaceae GH: 00698336 Campanula rotundifolia Linnaeus USA: Maine St. John E. F. Williams 1900-7-23
GH: 00698350 Campanula rotundifolia Linnaeus USA: Maine Mount Katahdin E. F. Williams 1900-7-13
Caprifoliaceae GH: 02038749 Lonicera japonica Thunberg USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-16
GH: 02037174 Lonicera sempervirens Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-16
GH: 02036856 Symphoricarpos rivularis Suksdorf USA: Massachusetts Billerica: East Billerica E. F. Williams 1900-8-12
Caryophyllaceae GH: 01744268 Dianthus armeria Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-16
GH: 00722555 Paronychia fastigiata (Rafinesque) Fernald USA: Massachusetts Burlington: Burlington E. F. Williams 1900-8-26
GH: 00581244 Scleranthus annuus Linnaeus USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-11-11
GH: 00732835 Silene antirrhina Linnaeus USA: Maine Biddeford: Biddeford E. F. Williams 1900-7-28
GH: 00602678 Silene dioica (Linnaeus) Clairville USA: Massachusetts Boston: Boston, near race course, Readville ... E. F. Williams 1900-9-23
GH: 00602823 Silene latifolia alba (Miller) Greuter & Burdet USA: Massachusetts Boston: Boston, near race course, Readville ... E. F. Williams 1900-9-23
Convolvulaceae GH: 02055340 Calystegia sepium americana (Sims) Brummitt USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-16
Cornaceae NEBC: 00387611 Cornus circinata L'Heritier USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
NEBC: 00387612 Cornus circinata L'Heritier USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00773713 Cornus intermedia (Farr) Calder & Roy L. Taylor USA: Maine E. F. Williams 1900-7-17
GH: 00773714 Cornus intermedia (Farr) Calder & Roy L. Taylor USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-21
GH: 00773716 Cornus intermedia (Farr) Calder & Roy L. Taylor USA: Maine Mount Katahdin E. F. Williams 1900-7-9
NEBC: 00387612 Cornus rugosa Lamarck USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00765403 Cornus stolonifera Michaux USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
NEBC: 00387611 Swida rugosa (Lamarck) Rydberg USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
NEBC: 00387612 Swida rugosa (Lamarck) Rydberg USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
Crassulaceae GH: 00581911 Sedum purpureum (Linnaeus) Schultes USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-30
Cyperaceae GH: 01058979 Carex Linnaeus USA: Maine Mount Katahdin E. F. Williams 1900-7-10
NEBC: 00221009 Carex arctata Boott USA: Maine Chimney Basin, Mount Katahdin E. F. Williams 1900-7-9
NEBC: 00221012 Carex arctata Boott USA: Maine Near McLeod camp, Wassataquoik valley E. F. Williams 1900-7-16
NEBC: 00217036 Carex atratiformis Britton USA: Maine Mount Katahdin, North Basin E. F. Williams 1900-7-13
GH: 00249720 Carex bicolor Allioni USA: Maine Fort Kent: On St. John River E. F. Williams 1900-7-26
GH: 00249721 Carex bicolor Allioni USA: Maine Saint Francis (Maine): At mouth of St. Franc... E. F. Williams 1900-7-30
NEBC: 00217339 Carex bigelowii Torrey ex Schweinitz USA: Maine Mount Katahdin, Saddle plateau E. F. Williams 1900-7-11
NEBC: 00218280 Carex bromoides Willdenow USA: Massachusetts Lawrence: South Lawrence E. F. Williams 1900-6-3
NEBC: 00218386 Carex brunnescens (Persoon) Poiret USA: Maine Mount Katahdin, Chimney Basin E. F. Williams 1900-7-9
GH: 00872027 Carex castanea Wahlenberg USA: Maine Fort Kent: Along the St. John river E. F. Williams 1900-8-1
GH: 00222270 Carex communis L. H. Bailey USA: Maine Mount Katahdin, Depot Pond E. F. Williams 1900-7-16
GH: 00222270 Carex communis communis USA: Maine Mount Katahdin, Depot Pond E. F. Williams 1900-7-16
GH: 00056973 Carex conoidea Schkuhr ex Willdenow USA: Maine Depot Pond, Mount Katahdin E. F. Williams 1900-7-16
NEBC: 00056882 Carex conoidea Schkuhr ex Willdenow USA: Maine Depot Pond, Mount Katahdin E. F. Williams 1900-7-16
GH: 00339445 Carex convoluta Mackenzie USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
GH: 00242569 Carex flava Linnaeus USA: Maine Fort Kent: Along the Saint John River E. F. Williams 1 1900-7-26
GH: 00249720 Carex garberi Fernald USA: Maine Fort Kent: On St. John River E. F. Williams 1900-7-26
GH: 00249720 Carex garberi bifaria Fernald USA: Maine Fort Kent: On St. John River E. F. Williams 1900-7-26
GH: 00249721 Carex garberi bifaria Fernald USA: Maine Saint Francis (Maine): At mouth of St. Franc... E. F. Williams 1900-7-30
GH: 00254843 Carex intumescens Rudge USA: Maine Fort Kent: Rish river delta E. F. Williams 1900-8-1
NEBC: 00263527 Carex intumescens Rudge USA: Maine Chimney Basin, Mt. Katahdin E. F. Williams 1900-7-9
GH: 00056973 Carex katahdinensis Fernald USA: Maine Depot Pond, Mount Katahdin E. F. Williams 1900-7-16
NEBC: 00056882 Carex katahdinensis Fernald USA: Maine Depot Pond, Mount Katahdin E. F. Williams 1900-7-16
GH: 01049377 Carex lenticularis Michaux USA: Maine Mount Katahdin E. F. Williams 1900-7-16
GH: 00808678 Carex lurida Wahlenberg USA: Connecticut E. F. Williams 1900-7-31
GH: 00808743 Carex magellanica irrigua (Wahlenberg) Hultén USA: Maine Wissataquick Valley E. F. Williams 1 1900-7-16
GH: 00808744 Carex magellanica irrigua (Wahlenberg) Hultén USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-7-22
NEBC: 00807336 Carex novae-angliae Schweinitz USA: Maine Mount Katahdin E. F. Williams 1900-7-16
GH: 00854561 Carex pellita Muhlenberg ex Willdenow USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-26
NEBC: 00854773 Carex pensylvanica Lamarck USA: Massachusetts Lawrence: Lawrence E. F. Williams 1900-6-3
GH: 00892497 Carex retrorsa Schweinitz USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
GH: 00339445 Carex rosea Schkuhr ex Willdenow USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
NEBC: 00717256 Carex saxatilis Linnaeus USA: Maine Mount Katahdin E. F. Williams 1900-7-9
GH: 00228529 Carex sp. USA: Maine Wassataquoik Valley E. F. Williams 1900-7-17
GH: 00802660 Carex stenolepis Lessing USA: Maine Mount Katahdin E. F. Williams 1900-7-16
NEBC: 00802663 Carex stenolepis Lessing USA: Maine Mount Katahdin E. F. Williams 1900-7-16
GH: 00874478 Carex stricta Lamarck USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-24
NEBC: 01060913 Carex utriculata Boott USA: Maine Roebar's Camp E. F. Williams 1900-7-17
GH: 01061145 Carex vesicaria Linnaeus USA: Maine Madawaska Lake E. F. Williams 1900-8-2
GH: 00027476 Carex vesicaria jejuna Fernald USA: Maine Madawaska Lake E. F. Williams 1900-8-2
NEBC: 01042030 Carex viridula Michaux USA: Maine Mount Katahdin E. F. Williams 139 1900-7-16
GH: 01042994 Cyperus odoratus Linnaeus USA: Massachusetts Boston: Neponset marshes, Readville [Hyde Pa... E. F. Williams 1 1900-9-23
NEBC: 00714252 Eleocharis obtusa (Willdenow) Schultes USA: Vermont Stockbridge: Stockbridge E. F. Williams 2125 1900
NEBC: 00717852 Eleocharis tuberculosa retrorsa Svenson USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
GH: 01060269 Eriophorum alpinum Linnaeus USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
NEBC: 01060271 Eriophorum alpinum Linnaeus USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
GH: 00680122 Fuirena pumila (Torrey) Sprengel USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
GH: 00894377 Scirpus atrocinctus Fernald USA: Maine Caribou: Caribou E. F. Williams 1900-8-2
GH: 00808158 Scirpus microcarpus J. Presl & C. Presl USA: Maine Cross Lake E. F. Williams 1900-8-2
Droseraceae GH: 00754365 Drosera rotundifolia Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-16
GH: 00754426 Drosera rotundifolia Linnaeus USA: New Hampshire Mount Washington E. F. Williams 3 1900-7-5
Ericaceae NEBC: 00985402 Arctous alpina (Linnaeus) Niedenzu USA: Maine North Basin, Mt. Katahdin E. F. Williams 1900-7-13
GH: 01562228 Chimaphila umbellata cisatlantica S. F. Blake Canada: New Brunswick St. Francis Parish E. F. Williams 1 1900-7-29
GH: 00726206 Empetrum eamesii atropurpureum (Fernald & Wiegand) D. Löve USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
GH: 01593931 Kalmia latifolia Linnaeus USA: New Jersey Locust E. F. Williams 1 1900-6-16
GH: 01718338 Lyonia mariana (Linnaeus) D. Don USA: New Jersey [data not captured] E. F. Williams 3 1900-6-17
NEBC: 00717315 Phyllodoce caerulea (Linnaeus) Babington USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
GH: 01761272 Pyrola elliptica Nuttall Canada: New Brunswick [data not captured] E. F. Williams 1 1900-7-29
GH: 00717383 Pyrola minor Linnaeus USA: Maine Mount Katahdin E. F. Williams 2 1900-7-16
GH: 00717381 Pyrola minor Linnaeus USA: Maine Allagash: Allagash E. F. Williams 3 1900-7-20
GH: 00717382 Pyrola minor Linnaeus USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
GH: 00638130 Vaccinium uliginosum Linnaeus USA: Maine Mount Katahdin E. F. Williams 1900-7-11
GH: 00638190 Vaccinium vitis-idaea minus Loddiges USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
Euphorbiaceae NEBC: 01078209 Acalypha gracilens A. Gray USA: Massachusetts Boston: Hyde Park, Readville E. F. Williams 1 1900-9-23
Fabaceae GH: 02067100 Apios americana Medikus USA: New Jersey Locust [Middleton Township] E. F. Williams 1900-9-2
NEBC: 00712354 Astragalus alpinus brunetianus Fernald USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 00747806 Desmodium canadense (Linnaeus) de Candolle USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-8-1
GH: 00747807 Desmodium canadense (Linnaeus) de Candolle USA: Maine Cumberland: Cumberland E. F. Williams 1 1900-7-28
GH: 00643258 Lathyrus palustris Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-20
NEBC: 00643266 Lathyrus palustris Linnaeus USA: Maine St. Francis E. F. Williams 1900-7-30
NEBC: 00643267 Lathyrus palustris Linnaeus USA: Maine St. John E. F. Williams 1900
GH: 02130000 Medicago sativa Linnaeus USA: New Jersey [data not captured] E. F. Williams 1900-6-18
NEBC: 00712470 Oxytropis campestris johannensis Fernald USA: Maine St. Francis E. F. Williams 1900-7-20
GH: 00712471 Oxytropis campestris johannensis Fernald USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 02136208 Strophostyles helvola (Linnaeus) Elliott USA: New Jersey [data not captured] E. F. Williams 1900-9-1
GH: 02136650 Stylosanthes biflora Britton, Stearn & Poggenburg USA: New Jersey [data not captured] E. F. Williams 1900-9-2
GH: 02343241 Trifolium incarnatum Linnaeus USA: New Jersey [data not captured] E. F. Williams 1900-6-20
GH: 00463117 Vicia cracca Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-21
Fagaceae NEBC: 00716355 Quercus velutina Lamarck USA: Massachusetts Wayland: Wayland E. F. Williams 1900-5-20
Gentianaceae GH: 02166420 Halenia deflexa (Smith) Grisebach Canada: New Brunswick St. Francis Parish E. F. Williams 1900-7-29
Geraniaceae GH: 00679918 Erodium botrys (Cavanilles) Bertoloni USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-11-4
GH: 00679920 Erodium botrys (Cavanilles) Bertoloni USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-11-4
GH: 00679921 Erodium botrys (Cavanilles) Bertoloni USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 2 1900-11-11
GH: 00761073 Erodium cicutarium (Linnaeus) L'Heritier USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-11-11
GH: 01866231 Geranium robertianum Linnaeus USA: New Jersey Sandy Hook [Middletown Township] E. F. Williams 1900-6-19
Haloragaceae GH: 01067121 Myriophyllum humile (Rafinesque) Morong USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
NEBC: 01071061 Myriophyllum tenellum Bigelow USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
GH: 01076197 Myriophyllum tenellum Bigelow USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 2 1900-8-12
GH: 01076199 Myriophyllum tenellum Bigelow USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1900-8-12
Hydrangeaceae GH: 01750714 Deutzia scabra Thunberg USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-19
Hypericaceae GH: 00774026 Hypericum boreale (Britton) E. P. Bicknell USA: Massachusetts Billerica: East Billerica, Long Pond E. F. Williams 1900-8-12
Iridaceae GH: 00869999 Iris versicolor Linnaeus USA: Maine Mount Katahdin E. F. Williams 1 1900-7-16
NEBC: 01044858 Sisyrinchium montanum crebrum Fernald USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-26
Juncaceae GH: 00859094 Juncus filiformis Linnaeus USA: Maine Mount Katahdin E. F. Williams 1 1900-7-13
GH: 00859841 Juncus nodosus Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
GH: 02398410 Juncus scirpoides Lamarck USA: New Jersey [data not captured] E. F. Williams 1900-9-2
GH: 02398705 Juncus subcaudatus (Engelmann) Coville & S. F. Blake USA: New Jersey [data not captured] E. F. Williams 1900-9-2
NEBC: 00032005 Juncus tenuis williamsii Fernald USA: Maine Van Buren: E. F. Williams 1900-7-19
GH: 00029684 Juncus tenuis williamsii Fernald USA: Maine Van Buren: E. F. Williams 1900-7-19
NEBC: 00725769 Luzula confusa Lindeberg USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
NEBC: 00725772 Luzula confusa Lindeberg USA: Maine Mount Katahdin E. F. Williams 1900-7-11
NEBC: 01182480 Luzula multiflora (Ehrhart) Lejeune USA: Maine St. John E. F. Williams 1900-7-23
NEBC: 00725702 Luzula spicata Linnaeus USA: Maine Mount Katahdin E. F. Williams 1 1900-7-9
Lamiaceae GH: 01555913 Clinopodium vulgare Linnaeus Canada: New Brunswick St. Francis Parish E. F. Williams 1900-7-29
NEBC: 00656034 Clinopodium vulgare Linnaeus USA: Maine St. Francis E. F. Williams 1 1900-7-20
GH: 01552023 Leonurus cardiaca Linnaeus USA: New Jersey Sandy Hook [Middletown Township] E. F. Williams 1900-6-19
NEBC: 01047857 Mentha canadensis Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 02502468 Monarda punctata Linnaeus USA: New Jersey Locust: [no additional data] E. F. Williams 1900-9-1
NEBC: 00648880 Scutellaria galericulata Linnaeus USA: Maine E. F. Williams 1 1900-7-28
NEBC: 00686545 Scutellaria lateriflora Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-26
GH: 00707483 Stachys hispida Pursh USA: Massachusetts Boston: Hyde Park, Readville E. F. Williams 1900-9-23
Lentibulariaceae GH: 00574915 Utricularia cornuta Michaux USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
GH: 00568247 Utricularia cornuta Michaux USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 1 1900-8-12
GH: 00574916 Utricularia cornuta Michaux USA: Maine Allagash River at Twin Brooks E. F. Williams 1900-7-28
GH: 00664463 Utricularia resupinata B. D. Greene ex Bigelow USA: Massachusetts Tewksbury: Round Pond, Tewksbury E. F. Williams 2 1900-8-12
GH: 00664464 Utricularia resupinata B. D. Greene ex Bigelow USA: Massachusetts Tewksbury: Long Pond, Tewksbury E. F. Williams 4 1900-8-12
Liliaceae GH: 00560340 Clintonia borealis (Aiton) Rafinesque USA: Maine Mt. Katahdin E. F. Williams 1900-7-11
NEBC: 00505303 Maianthemum canadense Desfontaines USA: Maine Mt. Katahdin E. F. Williams 1900-7-9
NEBC: 00817902 Maianthemum stellatum (Linnaeus) Link USA: Maine Allagash River E. F. Williams 1900-7-28
GH: 00868283 Maianthemum trifolium (Linnaeus) Sloboda USA: Maine Wissataquoik Valley E. F. Williams 2 1900-7-17
NEBC: 01030809 Streptopus lanceolatus (Aiton) Reveal USA: Maine Mount Katahdin E. F. Williams 1900-7-10
NEBC: 00810393 Trillium undulatum Willdenow USA: Maine Mount Katahdin E. F. Williams 1900-7-9
GH: 00810798 Uvularia perfoliata Linnaeus USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
Linaceae GH: 02053941 Linum striatum Walter USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-2
Lobeliaceae GH: 01966013 Lobelia inflata Linnaeus USA: Maine On the Allegash river near Twin Brooks E. F. Williams 1900-7-28
GH: 01966015 Lobelia inflata Linnaeus USA: Maine Fort Kent: [no additional data] E. F. Williams 1900-8-1
NEBC: 00691092 Lobelia kalmii Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-8-1
NEBC: 00691091 Lobelia kalmii Linnaeus USA: Maine Allagash: Allagash E. F. Williams 1 1900-7-27
Lycopodiaceae GH: 00214653 Diphasiastrum sabinifolium (Willdenow) Holub USA: Maine Fort Kent: Stevens Mountain E. F. Williams 1900-7-22
NEBC: 00214792 Diphasiastrum sitchense (Ruprecht) Holub USA: Maine Fort Kent: Stevens Mountain E. F. Williams 1900-7-22
GH: 02163745 Diphasiastrum tristachyum (Pursh) Holub Canada: New Brunswick in St. Francis Parish E. F. Williams 1900-7-29
NEBC: 00720834 Lycopodium clavatum Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
GH: 00720838 Lycopodium clavatum Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
GH: 00742288 Spinulum annotinum (Linnaeus) A. Haines USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
Malvaceae GH: 00751259 Abutilon theophrasti Medikus USA: Massachusetts Boston: Hyde Park, Readville E. F. Williams 1900-9-23
GH: 00751283 Abutilon theophrasti Medikus USA: New Jersey Locust: Locust E. F. Williams 1 1900-9-1
GH: 02201215 Hibiscus moscheutos Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-2
GH: 00679302 Sida hermaphrodita (Linnaeus) Rusby USA: Massachusetts Boston: Boston, Edge of Back Bay Fens E. F. Williams 1900-8-24
Myricaceae GH: 00563903 Myrica gale Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-21
GH: 00563904 Myrica gale Linnaeus USA: Maine Madawaska: Madawaska E. F. Williams 1900-8-2
Oleaceae GH: 01850673 Ligustrum vulgare Linnaeus USA: New Jersey Locust E. F. Williams 1 1900-6-16
Onagraceae GH: 01074510 Circaea sterilis Boufford USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-8-1
GH: 01779124 Ludwigia alternifolia Linnaeus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-9-1
GH: 00415836 Oenothera perennis Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-24
NEBC: 00568294 Oenothera perennis Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-7-21
NEBC: 00568293 Oenothera perennis Linnaeus USA: Maine St. Francis E. F. Williams 1 1900-7-30
GH: 00415836 Oenothera pumila Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-24
Ophioglossaceae GH: 00711395 Botrychium lanceolatum Angstrom USA: Maine Stacyville: woods between Stacyville and the... E. F. Williams 1 1900-7-5
Orchidaceae GH: 00834297 Coeloglossum viride bracteata (Muhlenberg) Grey USA: Maine Frenchville: Frenchville E. F. Williams 1 1900-7-20
GH: 01938083 Corallorhiza maculata (Rafinesque) Rafinesque Canada: New Brunswick St. Francis Parish E. F. Williams 1 1900-7-29
GH: 01016387 Goodyera tesselata Loddiges USA: Maine Mount Katahdin E. F. Williams 1900-7-13
NEBC: 01021696 Goodyera tesselata Loddiges USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1 1900-11-4
NEBC: 00354437 Liparis liliifolia (Linnaeus) Richard ex Lindley USA: Massachusetts Blue Hill, Blue Hills Reservation E. F. Williams 1900-6-10
GH: 01021784 Listera convallarioides (Swartz) Nuttall ex Elliott USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-23
GH: 01021887 Malaxis unifolia Michaux USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 01021897 Malaxis unifolia Michaux USA: Maine Penobscot: Penobscot E. F. Williams 2 1900-7-18
NEBC: 01021901 Malaxis unifolia Michaux USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
GH: 01052746 Platanthera andrewsii (M. White) Luer USA: Maine City Camp E. F. Williams 1 1900-7-17
AMES: 02066593 Platanthera ciliaris (Linnaeus) Lindley USA: New Jersey Locust E. F. Williams 1900-9-1
NEBC: 01062006 Platanthera clavellata (Michaux) Luer USA: Maine Jemtland E. F. Williams 1900-8-2
NEBC: 01062015 Platanthera clavellata (Michaux) Luer USA: Maine Wassataquoik Valley E. F. Williams 1900-7-17
GH: 01062192 Platanthera clavellata (Michaux) Luer USA: Vermont Sunderland: Sunderland E. F. Williams 2093 1900-8-6
NEBC: 01062461 Platanthera dilatata dilatata USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-7-24
NEBC: 01062493 Platanthera dilatata dilatata USA: Maine Wassataquoik Valley E. F. Williams 1 1900-7-7
NEBC: 00728798 Platanthera huronensis (Nuttall) Lindley USA: Maine Fort Kent: Fort Kent E. F. Williams 1 1900-7-21
NEBC: 00462867 Platanthera psycodes (Linnaeus) Lindley USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
NEBC: 00462868 Platanthera psycodes (Linnaeus) Lindley USA: Maine On Allagash river at Twin Brook E. F. Williams 1900-7-28
NEBC: 01056522 Spiranthes cernua (Linnaeus) Richard USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 2 1900-11-11
NEBC: 01008487 Spiranthes romanzoffiana Chamisso USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-2
NEBC: 01008486 Spiranthes romanzoffiana Chamisso USA: Maine St. Francis E. F. Williams 1900-7-29
AMES: 02032634 Spiranthes tuberosa Rafinesque USA: New Jersey Locust E. F. Williams 1 1900-9-2
Orobanchaceae GH: 00733376 Castilleja coccinea (Linnaeus) Sprengel USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
NEBC: 00733377 Castilleja coccinea (Linnaeus) Sprengel USA: Massachusetts Sud' E. F. Williams 1900-5-30
GH: 00733435 Castilleja septentrionalis Lindley USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
GH: 00503154 Pedicularis canadensis Linnaeus USA: Massachusetts Wayland: Wayland E. F. Williams 1900-5-20
GH: 00679520 Pedicularis furbishiae S. Watson USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
NEBC: 00679529 Rhinanthus minor Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
Osmundaceae GH: 00720158 Osmunda regalis spectabilis (Willdenow) A. Gray USA: Maine Mount Katahdin E. F. Williams 1 1900-7-16
Oxalidaceae NEBC: 00833075 Oxalis montana Rafinesque USA: Maine Mount Katahdin E. F. Williams 1 1900-7-16
NEBC: 01013433 Oxalis stricta Linnaeus USA: Massachusetts Milton: Milton E. F. Williams 1900-6-26
Parnassiaceae GH: 01057005 Parnassia glauca Rafinesque USA: Maine Allagash River E. F. Williams 1900-7-28
Pinaceae NEBC: 00551935 Abies balsamea (Linnaeus) Miller USA: Maine Mt. Katahdin E. F. Williams 1900-7-11
GH: 00576530 Pinus resinosa Aiton USA: Maine E. F. Williams 1900-7-17
Plantaginaceae GH: 02000977 Linaria vulgaris Miller USA: New Jersey [data not captured] E. F. Williams 1900-6-19
NEBC: 00729578 Penstemon pallidus Small USA: Massachusetts Norfolk: Norfolk E. F. Williams 1900-6-16
GH: 01804182 Plantago virginica Linnaeus USA: New Jersey [data not captured] E. F. Williams 2 1900-6-16
NEBC: 00707012 Veronica americana Schweinitz ex Bentham USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
GH: 00656624 Veronica arvensis Linnaeus USA: Connecticut East Windsor: East Windsor E. F. Williams 1900-5-30
GH: 01805478 Veronica arvensis Linnaeus USA: New Jersey [data not captured] E. F. Williams 3 1900-6-19
GH: 00655371 Veronica longifolia Linnaeus USA: Massachusetts Boston: Boston, by Back Bay Fens E. F. Williams 1900-8-24
GH: 00775187 Veronica wormskjoldii Roemer & Schultes USA: Maine Mount Katahdin E. F. Williams 1 1900-7-9
Poaceae GH: 00863967 Agrostis mertensii Trinius USA: Maine "Saddle slide" Mt. Katahdin, Me. E. F. Williams 1900-7-10
GH: 01178644 Agrostis stolonifera Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-8-1
GH: 02411616 Andropogon virginicus abbreviatus (Hackel) Fernald & Griscom USA: New Jersey Middletown: Locust E. F. Williams 1900-9-1
GH: 01175393 Aristida dichotoma Michaux USA: Connecticut Hartford: Hartford E. F. Williams 1900-9-20
NEBC: 00880193 Bromus ramosus Hudson USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
NEBC: 00880196 Bromus ramosus Hudson USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 00863967 Calamagrostis canadensis (Michaux) P. Beauvois USA: Maine "Saddle slide" Mt. Katahdin, Me. E. F. Williams 1900-7-10
GH: 01045442 Calamagrostis canadensis robusta Vasey USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 01045444 Calamagrostis canadensis robusta Vasey USA: Maine Cumberland: Cumberland E. F. Williams 1900-7-28
GH: 00863967 Calamagrostis langsdorfii (Link) Trinius USA: Maine "Saddle slide" Mt. Katahdin, Me. E. F. Williams 1900-7-10
GH: 00863967 Calamagrostis sp. USA: Maine "Saddle slide" Mt. Katahdin, Me. E. F. Williams 1900-7-10
GH: 00375595 Eatonia dudleyi Vasey USA: Massachusetts Blue Hill, Blue Hills Reserv. E. F. Williams 1900-6-10
GH: 00868113 Elymus canadensis Linnaeus USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 00880520 Elymus trachycaulus (Link) Gould ex Shinners USA: Maine Mount Katahdin E. F. Williams 1 1900-7-13
GH: 01030104 Elymus trachycaulus subsecundus (Link) Á. Löve & D. Löve USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-21
GH: 01030105 Elymus trachycaulus subsecundus (Link) Á. Löve & D. Löve USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
NEBC: 01030106 Elymus trachycaulus subsecundus (Link) Á. Löve & D. Löve USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
GH: 01030123 Elymus trachycaulus subsecundus (Link) Á. Löve & D. Löve USA: Maine Wassataquoik Valley E. F. Williams 1900-7-17
NEBC: 00853845 Eragrostis spectabilis (Pursh) Steudel USA: Massachusetts Billerica: East Billerica E. F. Williams 1900-8-12
NEBC: 01149703 Hierochloë alpina (Swartz ex Willdenow) Roemer & Schultes USA: Maine Mount Katahdin E. F. Williams 1900-7-11
GH: 01150787 Piptatherum pungens (Torrey) Dorn USA: Massachusetts Burlington: Burlington, Wood Hill E. F. Williams 1900-5-6
NEBC: 00863013 Piptochaetium avenaceum (Linnaeus) Parodi USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-10
NEBC: 00722954 Poa fernaldiana Nannfeldt USA: Maine Mount Katahdin E. F. Williams 1900-7-11
NEBC: 01148440 Poa palustris Linnaeus USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
NEBC: 01148293 Schizachne purpurascens (Torrey) Swallen USA: Maine Mount Katahdin E. F. Williams 1900-7-13
NEBC: 01182000 Sphenopholis intermedia Rydberg USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
GH: 01182001 Sphenopholis intermedia Rydberg USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
GH: 01182002 Sphenopholis intermedia Rydberg USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
GH: 00375595 Sphenopholis nitida (Biehler) Scribner USA: Massachusetts Blue Hill, Blue Hills Reserv. E. F. Williams 1900-6-10
GH: 00865000 Trisetum melicoides (Michaux) Scribner USA: Maine Allagash: Allagash E. F. Williams 1900-7-29
NEBC: 00865004 Trisetum melicoides (Michaux) Scribner USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 00865009 Trisetum melicoides (Michaux) Scribner USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
Polygonaceae GH: 00761976 Fagopyrum esculentum Moench USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
Ranunculaceae NEBC: 00753675 Actaea rubra (Aiton) Willdenow USA: Maine Frenchville: Frenchville E. F. Williams 1900-7-20
GH: 00753692 Actaea rubra (Aiton) Willdenow USA: Maine Mount Katahdin E. F. Williams 1900-7-16
GH: 00283708 Anemone Linnaeus USA: Maine Saint Francis (Maine): Rocky islet at mouth ... E. F. Williams 1 1900-7-30
GH: 01034522 Anemone canadensis Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-26
NEBC: 01034525 Anemone canadensis Linnaeus USA: Maine Frenchville: Frenchville E. F. Williams 1900-7-20
GH: 01034526 Anemone canadensis Linnaeus USA: Maine Frenchville: Frenchville E. F. Williams 1900-7-20
GH: 00283708 Anemone multifida Poiret USA: Maine Saint Francis (Maine): Rocky islet at mouth ... E. F. Williams 1 1900-7-30
NEBC: 00669760 Anemone multifida Poiret USA: Maine St. Francis E. F. Williams 1900-7-30
NEBC: 00753947 Anemone virginiana riparia (Fernald) B. Boivin USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 00553392 Coptis trifolia (Linnaeus) Salisbury USA: Maine Mt. Katahdin E. F. Williams 1900-7-9
GH: 00831073 Ranunculus abortivus Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 2 1900-6-10
GH: 00831074 Ranunculus abortivus Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1 1900-6-3
GH: 01986982 Ranunculus flammula reptans (Linnaeus) E. Meyer USA: Maine Depot pond, Mt. Katahdin E. F. Williams 1900-7-16
GH: 00692671 Ranunculus pensylvanicus Linnaeus f. USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-8-1
GH: 00692672 Ranunculus pensylvanicus Linnaeus f. USA: Maine Lower Grand Isle E. F. Williams 1900-7-20
GH: 00697061 Thalictrum pubescens Pursh USA: Maine Mount Katahdin E. F. Williams 1900-7-16
NEBC: 00697737 Thalictrum thalictroides (Linnaeus) A. J. Eames & B. Boivin USA: Massachusetts North Andover: North Andover E. F. Williams 1900-6-3
NEBC: 00697743 Thalictrum thalictroides (Linnaeus) A. J. Eames & B. Boivin USA: Massachusetts Burlington: Burlington E. F. Williams 1900-5-6
Rosaceae GH: 01586447 Agrimonia gryposepala Wallroth Canada: New Brunswick St. Francis parish E. F. Williams 1900-7-29
GH: 01586644 Agrimonia parviflora Aiton USA: New Jersey Locust [Middleton Township] E. F. Williams 1900-9-2
GH: 00649839 Agrimonia striata Michaux USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-8-1
GH: 00423365 Amelanchier spicata (Lamarck) K. Koch USA: Massachusetts Summit of Blue Hill. Blue Hills Reservation ... E. F. Williams 1900-6-10
GH: 00423365 Amelanchier stolonifera Wiegand USA: Massachusetts Summit of Blue Hill. Blue Hills Reservation ... E. F. Williams 1900-6-10
GH: 00653047 Comarum palustre Linnaeus USA: Vermont West Danville E. F. Williams 1900-7-13
GH: 01758112 Crataegus calpodendron (Ehrhart) Medikus USA: New Jersey Locust [Middletown Township] E. F. Williams 1900-6-16
GH: 00683558 Crataegus chrysocarpa Ashe USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
NEBC: 00683559 Crataegus chrysocarpa Ashe USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
GH: 00683561 Crataegus chrysocarpa Ashe USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
NEBC: 00683563 Crataegus chrysocarpa Ashe USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
A: 00017656 Crataegus fernaldii Sargent USA: Maine Fort Kent: E. F. Williams 1900-7-24
GH: 00694091 Crataegus intricata Lange USA: Massachusetts Westwood: Westwood E. F. Williams 1900-8-19
GH: 00694297 Crataegus keepii Sargent USA: Maine Biddeford: Biddeford E. F. Williams 1900-10-1
NEBC: 00524029 Fragaria vesca americana Porter USA: Maine Frenchville: Frenchville E. F. Williams 1900-7-20
GH: 00688252 Fragaria virginiana Miller USA: Maine Mount Katahdin E. F. Williams 1 1900-7-13
GH: 00643518 Potentilla anserina Linnaeus USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-24
GH: 00643526 Potentilla anserina Linnaeus USA: Maine St. John E. F. Williams 1900-7-23
NEBC: 00710961 Potentilla fruticosa (Linnaeus) Rydberg USA: Maine Allagash River E. F. Williams 2 1900-7-28
NEBC: 00710962 Potentilla fruticosa (Linnaeus) Rydberg USA: Maine Mount Katahdin E. F. Williams 1900-7-13
NEBC: 00348995 Potentilla simplex Michaux USA: Massachusetts Randolph Ave. Blue HIlls Reservation E. F. Williams 1900-6-24
NEBC: 00653348 Potentilla simplex Michaux USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
NEBC: 00348995 Potentilla simplex calvescens Fernald USA: Massachusetts Randolph Ave. Blue HIlls Reservation E. F. Williams 1900-6-24
GH: 00644613 Potentilla tridentata Aiton USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
GH: 00644615 Potentilla tridentata Aiton USA: Maine Mount Katahdin E. F. Williams 2 1900-7-13
GH: 00644614 Potentilla tridentata Aiton USA: Maine Fort Kent: Fort Kent E. F. Williams 3 1900-7-23
NEBC: 00743183 Prunus pumila depressa (Pursh) Gleason USA: Maine Fort Kent: Fort Kent E. F. Williams 2 1900-8-1
NEBC: 00743184 Prunus pumila depressa (Pursh) Gleason USA: Maine Wissataquoik River E. F. Williams 1 1900-7-17
NEBC: 00669372 Rosa blanda Aiton USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
GH: 00653558 Rosa johannensis Fernald USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-23
NEBC: 00423003 Rosa rubiginosa Linnaeus USA: Massachusetts Blue HIlls Reservation E. F. Williams 1900-6-24
GH: 00723877 Rubus pubescens Rafinesque USA: Maine Mount Katahdin E. F. Williams 1900-7-10
GH: 00709976 Sorbus americana Marshall USA: Maine Mount Katahdin E. F. Williams 1 1900-7-13
NEBC: 00747049 Sorbus decora (Sargent) C. K. Schneider USA: Maine Mount Katahdin E. F. Williams 1900-7-10
GH: 00659342 Spiraea latifolia (Aiton) Borkhausen USA: New Hampshire Mount Katahdin E. F. Williams 1 1900-7-16
Rubiaceae NEBC: 00375752 Galium obtusum Bigelow USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-24
NEBC: 00375752 Galium tinctorium Linnaeus USA: Massachusetts Blue Hills Reservation E. F. Williams 1900-6-24
GH: 02139602 Galium tinctorium floridanum Wiegand USA: New Jersey [data not captured] E. F. Williams 1900-6-19
Salicaceae NEBC: 00688789 Populus grandidentata Michaux USA: Massachusetts Wilmington: Wilmington E. F. Williams 1900-4-22
NEBC: 00705407 Salix herbacea Linnaeus USA: Maine Mount Katahdin E. F. Williams 1 1900-7-11
NEBC: 00769559 Salix lucida Muhlenberg USA: Maine Fort Kent: Fort Kent E. F. Williams 1900-7-22
GH: 00734845 Salix uva-ursi Pursh USA: Maine Mount Katahdin E. F. Williams 1900-7-11
Santalaceae GH: 00575309 Comandra umbellata (Linnaeus) Nuttall USA: Maine Mt. Agamenticus E. F. Williams 1900-7-17
Saxifragaceae GH: 00750896 Micranthes foliolosa (R. Brown) Gornall USA: Maine Mount Katahdin E. F. Williams 1900-7-11
GH: 00750898 Micranthes foliolosa (R. Brown) Gornall USA: Maine Mount Katahdin E. F. Williams 1900-7-11
NEBC: 00750902 Micranthes foliolosa (R. Brown) Gornall USA: Maine Mount Katahdin E. F. Williams 1900-7-11
GH: 01028141 Mitella nuda Linnaeus USA: Maine Allagash: Allagash E. F. Williams 1 1900-7-29
Selaginellaceae NEBC: 00632704 Selaginella rupestris (Linnaeus) Spring USA: Maine St. Francis E. F. Williams 1900-7-30
GH: 00632763 Selaginella rupestris (Linnaeus) Spring USA: Maine St. Francis E. F. Williams 1 1900-7-30
Taxaceae GH: 00668243 Taxus canadensis Marshall USA: Maine Mount Katahdin E. F. Williams 1 1900-7-13
Thelypteridaceae NEBC: 00701232 Phegopteris connectilis (Michaux) Watt USA: Maine Mount Katahdin E. F. Williams 1 1900-7-16
Thymelaeaceae GH: 00754154 Dirca palustris Linnaeus USA: Maine Stacyville: Stacyville E. F. Williams 1 1900-7-5
Valerianaceae NEBC: 00698124 Valeriana uliginosa (Torr. & A. Gray) Rydb. USA: Maine New Sweden: New Sweden E. F. Williams 1900-8-2
Violaceae NEBC: 00560906 Viola labradorica Schrank USA: Massachusetts Wayland: Wayland E. F. Williams 1 1900-5-20
GH: 00569457 Viola lanceolata Linnaeus USA: Massachusetts Blue Hill E. F. Williams 1 1900-6-24
NEBC: 00715960 Viola pedata Linnaeus USA: Massachusetts South Lawrence E. F. Williams 1900-6-3
NEBC: 00767004 Viola pedata Linnaeus USA: Massachusetts Sudbury: Sudbury E. F. Williams 1900-5-30
NEBC: 00640248 Viola sagittata ovata (Nuttall) Torrey & A. Gray USA: Massachusetts Tewksbury: Tewksbury E. F. Williams 1900-5-26
GH: 00659096 Viola sororia Willdenow USA: Massachusetts South Lawrence E. F. Williams 1 1900-6-3
GH: 00659156 Viola sororia Willdenow USA: Massachusetts Wayland: Wayland E. F. Williams 1 1900-5-20
