FH: 00259032 Alectoria chalybeiformis (Linnaeus) Gray USA: New Jersey Point Pleasant C. C. Plitt 405 1909-8-29
FH: 00259032 Alectoria nidulifera Norrlin ex Nylander USA: New Jersey Point Pleasant C. C. Plitt 405 1909-8-29
FH: 00388287 Alectoria ochroleuca (Hoffmann) A. Massalongo USA: Alaska [data not captured] C. C. Plitt 1921
FH: 00388419 Amandinea dakotensis (H. Magnusson) P. F. May & Sheard : North America: [data not captured] C. C. Plitt 1910
FH: 00388463 Amandinea polyspora (Willey) E. Lay & P. F. May USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00388727 Amandinea punctata (Hoffmann) Coppins & Scheidegger Canada: Alberta [data not captured] C. C. Plitt 1929
FH: 00388645 Amandinea punctata (Hoffmann) Coppins & Scheidegger USA: Maryland [data not captured] C. C. Plitt
FH: 00418214 Arthonia Acharius USA: Maine Rockport: [data not captured] C. C. Plitt 1909
FH: 00418396 Arthonia lecideella Nylander USA: Delaware [data not captured] C. C. Plitt 1911
FH: 00418214 Arthonia sp. USA: Maine Rockport: [data not captured] C. C. Plitt 1909
FH: 00259032 Bryopogon niduliferus isidialius Gyelnik USA: New Jersey Point Pleasant C. C. Plitt 405 1909-8-29
FH: 00259032 Bryoria furcellata (Fries) Brodo & D. Hawksworth USA: New Jersey Point Pleasant C. C. Plitt 405 1909-8-29
FH: 00408981 Buellia disciformis (Fries) Mudd USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00390227 Buellia spuria (Schaerer) Anzi USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00390362 Buellia stillingiana J. Steiner USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00390407 Buellia vernicoma (Tuckerman) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1909
FH: 00409897 Catillaria A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1909-9-21
FH: 00409897 Catillaria sp. USA: Maryland [data not captured] C. C. Plitt 1909-9-21
FH: 00393620 Cyphelium tigillare (Acharius) Acharius USA: Maryland [data not captured] C. C. Plitt 227 1909-10-5
FH: 00393621 Cyphelium tigillare (Acharius) Acharius USA: Maryland [data not captured] C. C. Plitt 227 1909-10-5
FH: 01139812 Dermatocarpon hepaticum (Acharius) Th. Fries USA: Maryland [no additional data] C. C. Plitt 1911-4-15
FH: 01139813 Dermatocarpon hepaticum (Acharius) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1909-11-12
FH: 00394426 Dermatocarpon miniatum (Linnaeus) W. Mann USA: Maryland [data not captured] C. C. Plitt 1905-11
FH: 00394479 Dermatocarpon miniatum complicatum (Lightfoot) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1906-2-20
FH: 00437682 Graphis scripta (Linnaeus) Acharius USA: Connecticut [data not captured] C. C. Plitt
FH: 00437691 Graphis scripta (Linnaeus) Acharius USA: Maryland [data not captured] C. C. Plitt 1906-12-1
FH: 00437693 Graphis scripta (Linnaeus) Acharius USA: New Jersey [data not captured] C. C. Plitt 1907-9-3
FH: 00437695 Graphis scripta (Linnaeus) Acharius USA: Maryland [no additional data] C. C. Plitt 84a 1906-11-20
FH: 00437799 Graphis scripta divaricata Leighton USA: Maryland [data not captured] C. C. Plitt 301 1909-9-24
FH: 00437818 Graphis scripta stellata (Leighton) Mudd USA: Maryland [data not captured] C. C. Plitt 1910-7-20
FH: 00437887 Graphis scripta varia (Leighton) Mudd USA: Maryland [no additional data] C. C. Plitt 413 1911
FH: 00437890 Graphis scripta varia (Leighton) Mudd USA: Maryland [data not captured] C. C. Plitt 416 1911-7-19
FH: 00430275 Lecidella sp. USA: New Jersey [data not captured] C. C. Plitt 155 1907
FH: 00377108 Lepraria lobificans Nylander USA: Maryland at [Harfud?] Rd. Bridge C. C. Plitt 1909-9-8
FH: 00377108 Lepraria normandinoides Lendemer & R. C. Harris USA: Maryland at [Harfud?] Rd. Bridge C. C. Plitt 1909-9-8
FH: 00430503 Lepraria sp. USA: Maryland [data not captured] C. C. Plitt 1906-1-6
FH: 00430893 Leptogium corticola (Taylor) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1908-1-15
FH: 00430894 Leptogium corticola (Taylor) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1910-6-7
FH: 00430895 Leptogium corticola (Taylor) Tuckerman USA: Virginia [data not captured] C. C. Plitt 1906-9-16
FH: 00430898 Leptogium corticola (Taylor) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1908-1-15
FH: 00442352 Leptogium cyanescens (Persoon) Körber USA: Maryland [data not captured] C. C. Plitt 1905-12-28
FH: 00442737 Leptorhaphis epidermidis (Acharius) Th. Fries USA: Maine Owls Head: [no additional data] C. C. Plitt 1909-8-19
FH: 00372430 Lobaria pulmonaria (Linnaeus) Hoffmann USA: Maryland [data not captured] C. C. Plitt 1910-8-15
FH: 00197683 Micarea chlorosticta (Tuckerman) R. C. Harris USA: New Jersey Allen Wood C. C. Plitt 1907-9-3
FH: 00197684 Micarea chlorosticta (Tuckerman) R. C. Harris USA: New Jersey Near Lakewood C. C. Plitt 1910-9-4
FH: 00455115 Nephroma resupinatum helveticum Rabenhorst USA: Maryland [no additional data] C. C. Plitt 1904-8-18
FH: 00377108 Pannaria lanuginosa (Acharius) Körber USA: Maryland at [Harfud?] Rd. Bridge C. C. Plitt 1909-9-8
FH: 00467365 Pannaria lurida (Montagne) Nylander USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00469235 Parmotrema dilatatum (Vainio) Hale USA: Florida [data not captured] C. C. Plitt 1910-4
FH: 00467602 Parmotrema hypotropum (Nylander) Hale USA: Maryland [data not captured] C. C. Plitt 1905-12-12
FH: 00467603 Parmotrema hypotropum (Nylander) Hale USA: Maryland [data not captured] C. C. Plitt 1906-12-15
FH: 00467604 Parmotrema hypotropum (Nylander) Hale USA: Maryland [data not captured] C. C. Plitt 1906-8-29
FH: 00467605 Parmotrema hypotropum (Nylander) Hale USA: Maryland [data not captured] C. C. Plitt 1906-11-17
FH: 00467828 Parmotrema perforatum (Acharius) A. Massalongo USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00467829 Parmotrema perforatum (Acharius) A. Massalongo USA: Maryland [no additional data] C. C. Plitt 1910-7-16
FH: 00467833 Parmotrema perforatum (Acharius) A. Massalongo USA: North Carolina [data not captured] C. C. Plitt 2866
FH: 00467962 Parmotrema perlatum (Hudson) M. Choisy USA: Maryland [data not captured] C. C. Plitt 1905-11-14
FH: 00468122 Parmotrema reticulatum (Taylor) M. Choisy USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00470335 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00470337 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt
FH: 00470338 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1910-6-7
FH: 00470339 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1910-6-2
FH: 00470340 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1905-6-26
FH: 00470341 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1910-6-18
FH: 00470342 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1910-5-10
FH: 00470343 Peltigera rufescens (Weiss) Humboldt USA: Maryland [data not captured] C. C. Plitt 1910-5-10
FH: 00469674 Peltigera sp. USA: Maryland [data not captured] C. C. Plitt 1909-11-27
FH: 00471809 Phaeographis dendritica (Acharius) Müller Argoviensis USA: New Jersey [data not captured] C. C. Plitt 1907
FH: 00471813 Phaeographis dendritica (Acharius) Müller Argoviensis USA: New Jersey [data not captured] C. C. Plitt 1907
FH: 00471802 Phaeographis ramificans (Nylander) Lettau USA: Maryland [data not captured] C. C. Plitt 1906-11-24
FH: 00471803 Phaeographis ramificans (Nylander) Lettau USA: Maryland [data not captured] C. C. Plitt 1908-3-24
FH: 00472435 Phaeophyscia ciliata (Hoffmann) Moberg USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00472436 Phaeophyscia ciliata (Hoffmann) Moberg USA: Maryland [data not captured] C. C. Plitt 1911-12-23
FH: 00472437 Phaeophyscia ciliata (Hoffmann) Moberg USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00472438 Phaeophyscia ciliata (Hoffmann) Moberg USA: Maryland [no additional data] C. C. Plitt 1908-2-22
FH: 00472507 Phaeophyscia hirtella Esslinger USA: Maryland [data not captured] C. C. Plitt 1907-1-8
FH: 00472782 Phaeophyscia pusilloides (Zahlbruckner) Esslinger USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00472785 Phaeophyscia pusilloides (Zahlbruckner) Esslinger USA: Maryland [data not captured] C. C. Plitt 1909-9-18
FH: 00472875 Phaeophyscia rubropulchra (Degelius) Moberg USA: Maryland [data not captured] C. C. Plitt 1911-1-31
FH: 00473121 Physcia americana G. Merrill USA: Maryland [no additional data] C. C. Plitt 1911-1-21
FH: 00472435 Physcia ciliata (Hoffmann) Du Rietz USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00472436 Physcia ciliata (Hoffmann) Du Rietz USA: Maryland [data not captured] C. C. Plitt 1911-12-23
FH: 00472437 Physcia ciliata (Hoffmann) Du Rietz USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00472438 Physcia ciliata (Hoffmann) Du Rietz USA: Maryland [no additional data] C. C. Plitt 1908-2-22
FH: 00472673 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00472674 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00472676 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt
FH: 00472677 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00472678 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt 1911-1-21
FH: 00472679 Physcia millegrana Degelius USA: Maryland [no additional data] C. C. Plitt 1906-9-11
FH: 00472680 Physcia millegrana Degelius USA: Maryland [no additional data] C. C. Plitt 1906-9-11
FH: 00472682 Physcia millegrana Degelius USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00472782 Physcia orbicularis (Baumgarten) Poetsch USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00472785 Physcia orbicularis (Baumgarten) Poetsch USA: Maryland [data not captured] C. C. Plitt 1909-9-18
FH: 00472875 Physcia orbicularis rubropulchra Degelius USA: Maryland [data not captured] C. C. Plitt 1911-1-31
FH: 00472893 Physcia phaea (Tuckerman) J. W. Thompson USA: Maine Rockland: [data not captured] C. C. Plitt 1909-8-21
FH: 00472904 Physcia phaea (Tuckerman) J. W. Thompson USA: Maryland [data not captured] C. C. Plitt 1909-11-27
FH: 00472507 Physcia sp. USA: Maryland [data not captured] C. C. Plitt 1907-1-8
FH: 00913781 Physcia tribacia (Acharius) Nylander USA: Maryland [no additional data] C. C. Plitt 1906-9-11
FH: 00473121 Physcia tribacoides Nylander USA: Maryland [no additional data] C. C. Plitt 1911-1-21
FH: 00473292 Physconia leucoleiptes (Tuckerman) Esslinger USA: Maryland [data not captured] C. C. Plitt 1910-4-25
FH: 00473972 Platismatia tuckermanii (Oakes) W. L. Culberson & C. F. Culberson USA: Maryland [no additional data] C. C. Plitt 1904
FH: 00473974 Platismatia tuckermanii (Oakes) W. L. Culberson & C. F. Culberson USA: Maryland [data not captured] C. C. Plitt 1909-12-14
FH: 00473976 Platismatia tuckermanii (Oakes) W. L. Culberson & C. F. Culberson USA: Maryland [data not captured] C. C. Plitt 1909-12-14
FH: 00474161 Polysporina simplex (Borrer ex Hooker) Vězda USA: Maryland [no additional data] C. C. Plitt 1909-9-28
FH: 00474946 Psilolechia lucida (Acharius) M. Choisy USA: Maryland [no additional data] C. C. Plitt 1910
FH: 00468225 Punctelia rudecta (Acharius) Krog USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00468226 Punctelia rudecta (Acharius) Krog USA: Maryland [data not captured] C. C. Plitt 1906-8-15
FH: 00468227 Punctelia rudecta (Acharius) Krog USA: Maryland [no additional data] C. C. Plitt 1907
FH: 00468228 Punctelia rudecta (Acharius) Krog USA: Maryland [data not captured] C. C. Plitt 1905-11-11
FH: 00475859 Pyrenula imperfecta (Ellis & Everhart) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-20
FH: 00475860 Pyrenula imperfecta (Ellis & Everhart) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-20
FH: 00475942 Pyrenula neglecta R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1906-11-20
FH: 00475943 Pyrenula neglecta R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00475944 Pyrenula neglecta R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00475945 Pyrenula neglecta R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-24
FH: 00475946 Pyrenula neglecta R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1910
FH: 00475947 Pyrenula neglecta R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00475942 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1906-11-20
FH: 00475943 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00475944 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00475945 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-24
FH: 00475946 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1910
FH: 00475947 Pyrenula pseudobufonia (Rehm) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00476024 Pyrenula punctella (Nylander) Trevisan USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00475859 Pyrenula subelliptica (Tuckerman) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-20
FH: 00475860 Pyrenula subelliptica (Tuckerman) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 1906-11-20
FH: 00477572 Rhizocarpon disporum (Nägeli ex Hepp) Müller Arg. USA: Maryland [data not captured] C. C. Plitt 1907-3-28
FH: 00477572 Rhizocarpon disporum montagnei (Flotow) Zahlbruckner USA: Maryland [data not captured] C. C. Plitt 1907-3-28
FH: 00477852 Rhizocarpon petraeum (Wulfen) A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1909-9-25
FH: 00477854 Rhizocarpon petraeum (Wulfen) A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1911-7-16
FH: 00478358 Rinodina nimbosa (Fries) Th. Fries USA: Colorado [data not captured] C. C. Plitt
FH: 00478360 Rinodina novoconfragosa Sheard USA: Maryland [data not captured] C. C. Plitt 1911-9-9
FH: 00478437 Rinodina verrucosa G. Merrill ex Sheard USA: Maryland [data not captured] C. C. Plitt 1911-8-15
FH: 00478438 Rinodina verrucosa G. Merrill ex Sheard USA: Maryland [data not captured] C. C. Plitt 1911-5-15
FH: 00474161 Sarcogyne similis H. Magnusson USA: Maryland [no additional data] C. C. Plitt 1909-9-28
FH: 00480845 Teloschistes chrysophthalmus (Linnaeus) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1906-9-18
FH: 00492833 Umbilicaria mammulata (Acharius) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1906-7-7
FH: 00492834 Umbilicaria mammulata (Acharius) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1906-7-7
FH: 00494125 Verrucaria calciseda de Candolle USA: Maryland [no additional data] C. C. Plitt 1910
FH: 00494269 Verrucaria nigrescens Persoon USA: Maryland [no additional data] C. C. Plitt 1911
FH: 00468637 Xanthoparmelia stenophylla (Acharius) Ahti & D. Hawksworth USA: Maryland [data not captured] C. C. Plitt 1908-3-28
FH: 00468639 Xanthoparmelia stenophylla (Acharius) Ahti & D. Hawksworth USA: Maryland [data not captured] C. C. Plitt 1908-3-31
FH: 00394051 Xanthoria candelaria (Linnaeus) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1909-10-30
FH: 00394052 Xanthoria candelaria (Linnaeus) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1909-10-30
FH: 00394053 Xanthoria candelaria (Linnaeus) Th. Fries USA: Maryland [data not captured] C. C. Plitt 33 1906-1-20
FH: 00394054 Xanthoria candelaria (Linnaeus) Th. Fries USA: Maryland [data not captured] C. C. Plitt 33a 1906-1-20
FH: 01140604 Xanthoria lychnea (Acharius) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1909-10-30
FH: 00407603 Xanthoria parietina (Linnaeus) Th. Fries USA: New Jersey [data not captured] C. C. Plitt 68 1906
FH: 00407604 Xanthoria parietina (Linnaeus) Th. Fries USA: New Jersey [data not captured] C. C. Plitt 1906
Agyriaceae FH: 00491749 Trapeliopsis granulosa (Hoffmann) Lumbsch USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00491751 Trapeliopsis granulosa (Hoffmann) Lumbsch USA: New Jersey [data not captured] C. C. Plitt 1909-8-22
FH: 00491752 Trapeliopsis granulosa (Hoffmann) Lumbsch USA: Maryland [data not captured] C. C. Plitt 1911-8-31
FH: 00491839 Trapeliopsis viridescens (Schrader) Coppins & P. James USA: Maryland [data not captured] C. C. Plitt 1909
Araceae GH: 01627641 Orontium aquaticum Linnaeus USA: Maryland Furnace Br. C. C. Plitt 672 1902-5-5
Aristolochiaceae GH: 01681608 Aristolochia clematitis Linnaeus USA: Maryland Baltimore: [data not captured] C. C. Plitt 1898-6
GH: 01681781 Aristolochia serpentaria Linnaeus USA: Maryland [data not captured] C. C. Plitt 835 1904-6-19
Arthopyreniaceae FH: 00418822 Arthopyrenia cinchonae (Acharius) Müller Arg. USA: Florida [data not captured] C. C. Plitt 1910
Aspleniaceae GH: 01919504 Asplenium bradleyi D. C. Eaton USA: Maryland [no additional data] C. C. Plitt 590 1902-8-13
Asteraceae GH: 01926921 Elephantopus carolinianus Willdenow USA: Maryland Thistle Glen C. C. Plitt 873 1904-9-24
GH: 02022183 Onopordum acanthium Linnaeus USA: Maryland [data not captured] C. C. Plitt 839 1904
Bignoniaceae GH: 02054588 Campsis radicans (Linnaeus) Bureau USA: Maryland Brooklyn C. C. Plitt 844 1904-7-14
Boraginaceae GH: 02026383 Echium vulgare Linnaeus USA: Maryland Mt. Winans C. C. Plitt 870 1904-9-3
GH: 01997338 Lithospermum virginianum Linnaeus USA: Maryland Gunpowder R. [River] C. C. Plitt 837 1905-7-1
Brassicaceae GH: 01098475 Cardamine angustata O. E. Schulz USA: Maryland Catonsville C. C. Plitt 821 1904-4-23
GH: 01693209 Rorippa sylvestris (Linnaeus) Besser USA: Maryland Canton C. C. Plitt 841 1904-7-6
Caesalpiniaceae GH: 01676385 Cercis canadensis Linnaeus USA: Maryland Catonsville C. C. Plitt 659 1903-4-26
GH: 01126103 Cercis canadensis Linnaeus USA: Maryland Catonsville C. C. Plitt 659 1903-7-10
GH: 01852176 Chamaecrista fasciculata (Michaux) Greene USA: Maryland [no additional data] C. C. Plitt 861 1904-8-7
GH: 01852554 Chamaecrista nictitans (Linnaeus) Moench USA: Maryland Road Bay C. C. Plitt 680 1902-7-15
Caliciaceae FH: 00390478 Calicium adspersum Persoon USA: Maryland [data not captured] C. C. Plitt 1909
FH: 00476342 Pyxine sorediata (Acharius) Montagne USA: Maryland [data not captured] C. C. Plitt 1909-10-19
FH: 00476346 Pyxine sorediata (Acharius) Montagne USA: Maryland [data not captured] C. C. Plitt 1905-11-11
Caloplacaceae FH: 00390853 Caloplaca citrina (Hoffmann) Th. Fries USA: Maryland [data not captured] C. C. Plitt 1908
FH: 00409035 Caloplaca flavorubescens (Hudson) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409121 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 449 1911
FH: 00409122 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 449 1911
FH: 00409125 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409126 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409130 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409131 Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnthein USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409219 Caloplaca holocarpa (Hoffmann ex Acharius) A. E. Wade USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409220 Caloplaca holocarpa (Hoffmann ex Acharius) A. E. Wade USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409221 Caloplaca holocarpa (Hoffmann ex Acharius) A. E. Wade USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00409222 Caloplaca holocarpa (Hoffmann ex Acharius) A. E. Wade USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00409471 Caloplaca subsoluta (Nylander) Zahlbruckner USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409472 Caloplaca subsoluta (Nylander) Zahlbruckner USA: Maryland [data not captured] C. C. Plitt
Capparaceae GH: 01872445 Polanisia dodecandra (Linnaeus) de Candolle USA: Maryland S. Baltimore C. C. Plitt 845 1904-7-15
Caryophyllaceae GH: 01751041 Scleranthus annuus Linnaeus USA: Maryland Waterford C. C. Plitt 855 1904-8-2
GH: 01751826 Silene caroliniana pensylvanica (Michaux) Fernald USA: Maryland Orange Grove C. C. Plitt 661 1903-5-10
GH: 01623907 Stellaria pubera Michaux USA: Maryland Catonsville C. C. Plitt 674 1902-5-10
Cephaloziaceae FH: 00496241 Cephalozia catenulata (Huebener) Lindberg USA: Maryland [data not captured] C. C. Plitt 1905-3-28
FH: 00507688 Nowellia curvifolia (Dickson) Mitten USA: Maryland [data not captured] C. C. Plitt 1905-12-30
FH: 00507824 Odontoschisma prostratum (Dickson) Dumortier USA: Maryland [data not captured] C. C. Plitt 1905-7-20
Cladoniaceae FH: 00413712 Cladonia P. Browne USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00413713 Cladonia P. Browne USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00413723 Cladonia P. Browne USA: Maryland [data not captured] C. C. Plitt 126d 1911-3-9
FH: 00413724 Cladonia P. Browne USA: Maryland [data not captured] C. C. Plitt 351a 1910-3-1
FH: 00413725 Cladonia P. Browne USA: Maryland [data not captured] C. C. Plitt 453b 1911-9-1
FH: 00406921 Cladonia P. Browne USA: Maryland [data not captured] C. C. Plitt 1907-5-8
FH: 00406922 Cladonia P. Browne USA: Maryland [data not captured] C. C. Plitt 1907-8-5
FH: 00406166 Cladonia arbuscula (Wallroth) Flotow USA: Maryland [data not captured] C. C. Plitt 136 1907
FH: 00406170 Cladonia arbuscula (Wallroth) Flotow USA: Maryland [data not captured] C. C. Plitt 35 1906
FH: 00406171 Cladonia arbuscula (Wallroth) Flotow USA: Maryland [data not captured] C. C. Plitt 35b 1905
FH: 00406172 Cladonia arbuscula (Wallroth) Flotow USA: Maryland [data not captured] C. C. Plitt 35c 1906
FH: 00406173 Cladonia arbuscula (Wallroth) Flotow USA: Maryland [data not captured] C. C. Plitt 20 1905
FH: 00406421 Cladonia bacillaris (Acharius) Genth USA: Maryland [data not captured] C. C. Plitt 131 1906
FH: 00406521 Cladonia bacillaris (Acharius) Genth USA: Maine South Thomaston: [data not captured] C. C. Plitt 1909-8-19
FH: 00406565 Cladonia bacillaris (Acharius) Genth USA: Maryland [data not captured] C. C. Plitt 1907-5-27
FH: 00406856 Cladonia boryi Tuckerman USA: Maryland [data not captured] C. C. Plitt 182 1908-12-12
FH: 00406873 Cladonia boryi Tuckerman USA: New Jersey [data not captured] C. C. Plitt 166 1907
FH: 00412016 Cladonia caespiticia (Persoon) Flörke USA: Maryland [data not captured] C. C. Plitt 91a 1907
FH: 00412019 Cladonia caespiticia (Persoon) Flörke USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00412020 Cladonia caespiticia (Persoon) Flörke USA: Maryland [data not captured] C. C. Plitt 91b 1907
FH: 00412028 Cladonia caespiticia (Persoon) Flörke USA: Maryland [data not captured] C. C. Plitt 91d 1907
FH: 00412029 Cladonia caespiticia (Persoon) Flörke USA: Maryland [data not captured] C. C. Plitt 21a 1905-9-16
FH: 00406911 Cladonia cartilaginea Müller Arg. USA: Maryland [data not captured] C. C. Plitt 3156 1909
FH: 00412469 Cladonia cervicornis (Acharius) Flotow USA: Maryland [data not captured] C. C. Plitt 45b 1906-11-16
FH: 00412470 Cladonia cervicornis (Acharius) Flotow USA: Maryland [data not captured] C. C. Plitt 45 1905-11-11
FH: 00412589 Cladonia cervicornis verticillata (Hoffmann) Ahti USA: Maryland [data not captured] C. C. Plitt 1905-11
FH: 00412590 Cladonia cervicornis verticillata (Hoffmann) Ahti USA: Maryland [data not captured] C. C. Plitt 1905-11-14
FH: 00412667 Cladonia cervicornis verticillata (Hoffmann) Ahti USA: Maryland [data not captured] C. C. Plitt 181 1909
FH: 00412862 Cladonia chlorophaea (Flörke ex Sommerfelt) Sprengel USA: Maryland [data not captured] C. C. Plitt 369 1910
FH: 00411056 Cladonia chlorophaea (Flörke ex Sommerfelt) Sprengel USA: Maryland [data not captured] C. C. Plitt 128 1907-4-27
FH: 00411057 Cladonia chlorophaea (Flörke ex Sommerfelt) Sprengel USA: Maryland [data not captured] C. C. Plitt 92c 1907
FH: 00411229 Cladonia coccifera stemmatina (Acharius) Vainio USA: Maryland [data not captured] C. C. Plitt 179 1909
FH: 00411366 Cladonia coniocraea (Flörke) Sprengel USA: Maryland [data not captured] C. C. Plitt 42b 1909-8-18
FH: 00411430 Cladonia coniocraea (Flörke) Sprengel USA: Maryland [data not captured] C. C. Plitt 81 1906
FH: 00411621 Cladonia crispata (Acharius) Flotow USA: Maryland [data not captured] C. C. Plitt 40b 1906
FH: 00411706 Cladonia crispata elegans (Delise) Vainio USA: Maryland [data not captured] C. C. Plitt 40d 1906
FH: 00411958 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130d 1907
FH: 00411959 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 180 1909
FH: 00411960 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130g 1909
FH: 00411961 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 39b 1905
FH: 00411962 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130j 1907
FH: 00411964 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130k 1907
FH: 00411965 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130a 1906
FH: 00410004 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 191a 1909-4-20
FH: 00410198 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130b 1906-8-30
FH: 00410199 Cladonia cristatella Tuckerman USA: Maryland [data not captured] C. C. Plitt 130 1906-8-29
FH: 00410448 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 1907-5-4
FH: 00410449 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 351 1910
FH: 00410450 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 168a 1908
FH: 00410452 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 41f 1905
FH: 00410453 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 41d 1905
FH: 00410454 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 41d 1907-12-28
FH: 00410456 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 132 1907
FH: 00410457 Cladonia didyma muscigena (Eschweiler) Vainio USA: Maryland [data not captured] C. C. Plitt 214 1907
FH: 00410901 Cladonia fimbriata (Linnaeus) Fries USA: Maryland [data not captured] C. C. Plitt 410 1911
FH: 00371289 Cladonia furcata (Hudson) Schrader USA: Maryland [data not captured] C. C. Plitt 430 1911-7-28
FH: 00371291 Cladonia furcata (Hudson) Schrader USA: Maryland [data not captured] C. C. Plitt 411 1911
FH: 00371332 Cladonia furcata (Hudson) Schrader USA: Connecticut [data not captured] C. C. Plitt 252 1909
FH: 00371495 Cladonia furcata corymbosa (Acharius) Nylander USA: Maryland [data not captured] C. C. Plitt 184 1908
FH: 00371617 Cladonia furcata pinnata (Flörke) Vainio USA: Maryland [data not captured] C. C. Plitt 1342 1907-4-23
FH: 00371626 Cladonia furcata pinnata (Flörke) Vainio USA: North Carolina [data not captured] C. C. Plitt 1924
FH: 00371682 Cladonia furcata foliolosa (Duby) Vainio USA: Maryland [data not captured] C. C. Plitt 50 1905
FH: 00371685 Cladonia furcata foliolosa (Duby) Vainio USA: Maryland [data not captured] C. C. Plitt 451 1911
FH: 00371722 Cladonia furcata truncata Vainio USA: Maryland [data not captured] C. C. Plitt 18a 1905-11-18
FH: 00405519 Cladonia furcata furcatosubulata (Hoffmann) Sandstede USA: Maryland [data not captured] C. C. Plitt 1905
FH: 00428017 Cladonia gracilis (Linnaeus) Willdenow USA: [data not captured] C. C. Plitt 2
FH: 00428633 Cladonia hypoxantha Tuckerman USA: Maryland [data not captured] C. C. Plitt 191 1909
FH: 00428702 Cladonia incrassata Flörke USA: Maryland [data not captured] C. C. Plitt 41 1906
FH: 00428703 Cladonia incrassata Flörke USA: Maryland [data not captured] C. C. Plitt 130b 1906
FH: 00428985 Cladonia macilenta Hoffmann USA: Maryland [data not captured] C. C. Plitt 130f 1907
FH: 00428952 Cladonia macilenta squamigera Vainio USA: Maryland [data not captured] C. C. Plitt 4 1906-10-7
FH: 00428976 Cladonia macilenta styracella (Acharius) Vainio USA: Maryland [data not captured] C. C. Plitt 4 1905-10-7
FH: 00370690 Cladonia ochrochlora ceratodes (Flörke) Harmand USA: Maryland [data not captured] C. C. Plitt 79 1909-12-22
FH: 00370858 Cladonia parasitica (Hoffmann) Hoffmann USA: Maryland [data not captured] C. C. Plitt 202 1907
FH: 00370896 Cladonia parasitica (Hoffmann) Hoffmann USA: Maryland [data not captured] C. C. Plitt 23 1905
FH: 00370898 Cladonia parasitica (Hoffmann) Hoffmann USA: Maryland [data not captured] C. C. Plitt 346 1910-4-19
FH: 00370899 Cladonia parasitica (Hoffmann) Hoffmann USA: Maryland [data not captured] C. C. Plitt 1906-12-22
FH: 00370900 Cladonia parasitica (Hoffmann) Hoffmann USA: Maryland [data not captured] C. C. Plitt 346 1910
FH: 00370930 Cladonia peziziformis (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 408 1911-1-14
FH: 00370936 Cladonia peziziformis (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 48a 1905-11-14
FH: 00370937 Cladonia peziziformis (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 48b 1905-9-16
FH: 00370938 Cladonia peziziformis (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 48 1905-11-14
FH: 00370939 Cladonia peziziformis (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 10 1905-10-3
FH: 00440246 Cladonia phyllophora Hoffmann USA: North Carolina [data not captured] C. C. Plitt 196 1908
FH: 00440214 Cladonia phyllophora euphorea (Acharius) J. W. Thomson USA: Maryland [data not captured] C. C. Plitt 45e 1905-11-11
FH: 00440463 Cladonia pleurota (Flörke) Schaerer USA: Maryland [data not captured] C. C. Plitt 90 1907
FH: 00440538 Cladonia pocillum (Acharius) O. J. Richard USA: Maryland [data not captured] C. C. Plitt 5 1905-9-23
FH: 00440577 Cladonia polycarpia G. Merrill USA: Maryland [data not captured] C. C. Plitt 350 1910
FH: 00440578 Cladonia polycarpia G. Merrill USA: Maryland [data not captured] C. C. Plitt 432a 1911
FH: 00440582 Cladonia polycarpia G. Merrill USA: Maryland [data not captured] C. C. Plitt 409 1916
FH: 00440809 Cladonia pyxidata (Linnaeus) Hoffmann USA: Maryland [data not captured] C. C. Plitt 139a 1907
FH: 00426056 Cladonia pyxidata (Linnaeus) Hoffmann USA: Maryland [data not captured] C. C. Plitt 464 1911
FH: 00440974 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 463 1911
FH: 00440975 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 139 1907
FH: 00440976 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 928 1907
FH: 00440977 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 189 1908
FH: 00440978 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00440979 Cladonia pyxidata neglecta (Flörke) Massalongo, A. B. USA: Maryland [data not captured] C. C. Plitt 92b 1907-4-27
FH: 00426141 Cladonia ramulosa (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 138 1907
FH: 00426142 Cladonia ramulosa (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 190 1909
FH: 00426180 Cladonia ramulosa (Withering) J. R. Laundon USA: Maryland [data not captured] C. C. Plitt 1905-11-25
FH: 00426392 Cladonia rangiferina (Linnaeus) Weber ex F. H. Wiggers USA: New Jersey [data not captured] C. C. Plitt 164 1907
FH: 00426457 Cladonia rangiferina (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 430a 1911
FH: 00426458 Cladonia rangiferina (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 430c 1911
FH: 00413712 Cladonia sp. USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00413713 Cladonia sp. USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00413723 Cladonia sp. USA: Maryland [data not captured] C. C. Plitt 126d 1911-3-9
FH: 00413724 Cladonia sp. USA: Maryland [data not captured] C. C. Plitt 351a 1910-3-1
FH: 00413725 Cladonia sp. USA: Maryland [data not captured] C. C. Plitt 453b 1911-9-1
FH: 00406921 Cladonia sp. USA: Maryland [data not captured] C. C. Plitt 1907-5-8
FH: 01140247 Cladonia sp. USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 00392234 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 44 1908-1-21
FH: 00392235 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 40a 1905-3-28
FH: 00392236 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 167 1908-1-21
FH: 00392237 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 170c 1908-1-21
FH: 00392238 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 40e 1905-11-11
FH: 00392239 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 126j 1906-12-15
FH: 00392240 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 126h 1907-5-28
FH: 00392241 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 126b 1907-3-19
FH: 00392242 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 126e 1907
FH: 00392243 Cladonia squamosa denticollis (Hoffmann) Flörke USA: Maryland [data not captured] C. C. Plitt 126 1907-3-16
FH: 00392468 Cladonia squamosa phyllocoma (Rabenhorst) Vainio USA: Maryland [data not captured] C. C. Plitt 1905-9-23
FH: 00392357 Cladonia squamosa squamosissima Flörke USA: Maryland [data not captured] C. C. Plitt 1269 1907-5-14
FH: 00392358 Cladonia squamosa squamosissima Flörke USA: Maryland [data not captured] C. C. Plitt 170 1908-1-21
FH: 00391015 Cladonia strepsilis (Acharius) Grognot USA: Maryland [data not captured] C. C. Plitt 16 1911-2-18
FH: 00391016 Cladonia strepsilis (Acharius) Grognot USA: Maryland [data not captured] C. C. Plitt 352 1909-10-12
FH: 00391018 Cladonia strepsilis (Acharius) Grognot USA: Maryland [data not captured] C. C. Plitt 16 1905-11-25
FH: 00391049 Cladonia strepsilis (Acharius) Grognot USA: Maryland [data not captured] C. C. Plitt 183 1908-12-12
FH: 00391051 Cladonia strepsilis (Acharius) Grognot USA: Maryland [data not captured] C. C. Plitt 358 1909-9-25
FH: 00391150 Cladonia subcariosa Nylander USA: Maryland [data not captured] C. C. Plitt 432 1911
FH: 00391251 Cladonia subcariosa evoluta Vainio USA: Maryland [data not captured] C. C. Plitt 44 1905
FH: 00391253 Cladonia subcariosa evoluta Vainio USA: Maryland [data not captured] C. C. Plitt 47 1906
FH: 00391254 Cladonia subcariosa evoluta Vainio USA: Maryland [data not captured] C. C. Plitt 44a 1905
FH: 00391415 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 430d 1911-7-28
FH: 00391416 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 349 1910
FH: 00391417 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 135 1907-4-23
FH: 00391418 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 135a 1907-4-23
FH: 00391419 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 430b 1911-7-28
FH: 00391420 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 35a
FH: 00391421 Cladonia subtenuis (Abbayes) Mattick USA: Maryland [data not captured] C. C. Plitt 51 1906-1-27
FH: 00391713 Cladonia tenuis (Flörke) Harmand USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00391946 Cladonia turgida Ehrhart ex Hoffmann USA: Maryland [data not captured] C. C. Plitt 19 1905-11-4
FH: 00407273 Cladonia uncialis (Linnaeus) Weber ex F. H. Wiggers Canada: [data not captured] C. C. Plitt 1905-7-21
FH: 00407471 Cladonia uncialis (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 49 1906
FH: 01140280 Cladonia uncialis (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [no additional data] C. C. Plitt 1911-7-1
FH: 00407429 Cladonia uncialis obtusata (Acharius) Vainio USA: Maryland [data not captured] C. C. Plitt 1911-7-1
FH: 00407430 Cladonia uncialis obtusata (Acharius) Vainio USA: Maryland [data not captured] C. C. Plitt 1911-7-1
FH: 00407332 Cladonia uncialis biuncialis (Hoffmann) Schaerer USA: Maryland [data not captured] C. C. Plitt 347 1910
FH: 00407400 Cladonia uncialis humilior Fries USA: Maryland [data not captured] C. C. Plitt 134 1907-3-16
FH: 01140297 Cladonia verticillata (Hoffmann) Schaerer USA: Maryland [no additional data] C. C. Plitt 1907-3-28
FH: 00475431 Pycnothelia papillaria (Ehrhart) Dufour USA: Maryland [data not captured] C. C. Plitt 1908-12-15
FH: 00475468 Pycnothelia papillaria molariformis (Hoffmann) Schaerer USA: Maryland [no additional data] C. C. Plitt 1905
FH: 00475471 Pycnothelia papillaria molariformis (Hoffmann) Schaerer USA: Maryland [no additional data] C. C. Plitt 1909-9
FH: 00475507 Pycnothelia sp. USA: Maryland [data not captured] C. C. Plitt 1907-3-16
Coccocarpiaceae FH: 00407829 Coccocarpia palmicola (Sprengel) Arvidsson & D. J. Galloway USA: Maryland [data not captured] C. C. Plitt 1910-6-7
Coenogoniaceae FH: 00407869 Coenogonium Ehrenberg USA: New Jersey [data not captured] C. C. Plitt 1910-9-8
FH: 00407974 Coenogonium pineti (Acharius) R. Lucking & H. T. Lumbsch USA: Maryland [data not captured] C. C. Plitt 368 1910-8-20
FH: 00407869 Coenogonium sp. USA: New Jersey [data not captured] C. C. Plitt 1910-9-8
Collemataceae FH: 00407989 Collema (Weber) F. H. Wiggers USA: Maryland Cumberland C. C. Plitt 450 1911
FH: 00393037 Collema conglomeratum Hoffmann USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00393038 Collema conglomeratum Hoffmann USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00393161 Collema flaccidum (Acharius) Acharius USA: Maryland [data not captured] C. C. Plitt 43c 1906-8-18
FH: 00393162 Collema flaccidum (Acharius) Acharius USA: Maryland [data not captured] C. C. Plitt 1906-8-18
FH: 00393163 Collema flaccidum (Acharius) Acharius USA: North Carolina [data not captured] C. C. Plitt 6302 1923-10-21
FH: 01139690 Collema pycnocarpum Nylander USA: Maryland [no additional data] C. C. Plitt 1909-9-11
FH: 00407989 Collema sp. USA: Maryland Cumberland C. C. Plitt 450 1911
Commelinaceae GH: 02073490 Commelina communis Linnaeus USA: Maryland [data not captured] C. C. Plitt 872 1904-9-11
GH: 02098090 Tradescantia virginiana Linnaeus USA: Maryland [data not captured] C. C. Plitt 662 1903-5-14
Cupressaceae GH: 02020102 Chamaecyparis thyoides (Linnaeus) Britton, Stearn & Poggenburg USA: Maryland Round Bay C. C. Plitt 1904-4-16
GH: 02104018 Juniperus communis Linnaeus USA: Maryland [data not captured] C. C. Plitt 1904-4-26
Ericaceae GH: 01592680 Gaylussacia brachycera (Michaux) A. Gray USA: Maryland Near village of Waterford C. C. Plitt 1932-9-12
GH: 01593559 Kalmia angustifolia Linnaeus USA: Maryland Glenburnie C. C. Plitt 668 1903-5-27
GH: 01718293 Lyonia mariana (Linnaeus) D. Don USA: Maryland Glenburnie C. C. Plitt 679 1903-6-4
GH: 00310698 Monotropsis odorata Schweinitz USA: Maine Arundel: Benfield, Anne C. C. Plitt 652 1903-3-28
Fabaceae GH: 01881805 Clitoria mariana Linnaeus USA: Maryland [no additional data] C. C. Plitt 848 1904-7-23
GH: 01884469 Crotalaria sagittalis Linnaeus USA: Maryland Pumphrey's Station C. C. Plitt 681 1902-7-26
GH: 01961588 Desmodium marilandicum (Linnaeus) de Candolle USA: Maryland Catonsville C. C. Plitt 871 1904-9-3
GH: 01959251 Galactia regularis (Linnaeus) Britton, Stearn & Poggenburg USA: Maryland [illegible] C. C. Plitt 849 1904-7-23
GH: 02129503 Medicago arabica (Linnaeus) Hudson USA: Maryland [data not captured] C. C. Plitt 665 1903-5-12
GH: 02129984 Medicago sativa Linnaeus USA: Maryland [data not captured] C. C. Plitt 830 1904-6-6
GH: 00283073 Ononis arvensis Linnaeus USA: Maryland Conton C. C. Plitt 660 1903-9-12
GH: 00283073 Ononis repens Linnaeus USA: Maryland Conton C. C. Plitt 660 1903-9-12
GH: 00283073 Ononis spinosa Linnaeus USA: Maryland Conton C. C. Plitt 660 1903-9-12
GH: 00283073 Ononis spinosa maritima P. Fournier USA: Maryland Conton C. C. Plitt 660 1903-9-12
GH: 02134495 Rhynchosia tomentosa (Linnaeus) Hooker & Arnott USA: Maryland [data not captured] C. C. Plitt 688 1903-8-8
GH: 02342398 Trifolium campestre Schreber USA: Maryland [data not captured] C. C. Plitt 664 1903-5-30
GH: 02345823 Vicia cracca Linnaeus USA: Maryland [data not captured] C. C. Plitt 669 1903-5-11
Fissidentaceae FH: 00779667 Fissidens taxifolius Hedwig USA: Maryland [data not captured] C. C. Plitt 1909-4-10
Frullaniaceae FH: 00497986 Frullania asagrayana Montagne USA: Maryland [data not captured] C. C. Plitt 1904-9-7
FH: 00498107 Frullania brittoniae A. W. Evans USA: Maryland [data not captured] C. C. Plitt 1905-5-30
FH: 00498110 Frullania brittoniae A. W. Evans USA: Maryland [data not captured] C. C. Plitt 1905-5-30
FH: 00498605 Frullania plana Sullivant USA: Maryland [data not captured] C. C. Plitt 1908
Funariaceae FH: 00847450 Physcomitrium pyriforme (Hedwig) Hampe USA: Maryland [data not captured] C. C. Plitt 1907-5-3
Gentianaceae GH: 02165906 Sabatia dodecandra (Linnaeus) Britton, Sterns & Poggenburg USA: Maryland Furnace Branch C. C. Plitt 685 1902-8-5
GH: 02164240 Sabatia stellaris Pursh USA: Maryland Green's Sta. C. C. Plitt 860 1904-8-7
Geocalycaceae FH: 00497074 Chiloscyphus polyanthos fragilis (Roth) Schiffner USA: Maryland [data not captured] C. C. Plitt 1905-8-20
FH: 00498846 Geocalyx graveolens (Schrader) Dumortier USA: Maryland [data not captured] C. C. Plitt 1904-10-15
Geraniaceae GH: 01864115 Geranium carolinianum Linnaeus USA: Maryland Orange Grove C. C. Plitt 663 1903-5-25
Graphidaceae FH: 00471749 Phaeographina ramificans (Krempelhuber) Zahlbruckner USA: Maryland [no additional data] C. C. Plitt 1910-5-17
FH: 00471750 Phaeographina ramificans (Krempelhuber) Zahlbruckner USA: Maryland [no additional data] C. C. Plitt 1906-11-24
Hypnaceae FH: 00841070 Hypnum curvifolium Hedwig USA: Maryland [data not captured] C. C. Plitt 1904-5-15
FH: 00920805 Pylaisiella selwynii (Kindberg) H. A. Crum, Steere & L. E. Anderson USA: Maryland [data not captured] C. C. Plitt 1908-2
Hysteriaceae FH: 00458911 Hysterium sp. USA: Maryland Groymin Falls, Baltomore Co., Md. C. C. Plitt 401 1921-3-19
Incertae sedis FH: 00418992 Arthothelium spectabile A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00418994 Arthothelium spectabile A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00418995 Arthothelium spectabile A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00418996 Arthothelium spectabile A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00419051 Arthothelium taediosum (Nylander) Müller Argoviensis USA: Maryland [data not captured] C. C. Plitt 1910
Lamiaceae GH: 01600220 Mentha rotundifolia (Linnaeus) Hudson USA: Maryland Canton [Baltimore?] C. C. Plitt 819 1904-7-6
GH: 01597530 Pycnanthemum incanum (Linnaeus) Michaux USA: Maryland Catonville C. C. Plitt 846 1904-7-20
GH: 01596056 Pycnanthemum tenuifolium Schrader USA: Maryland Owing's Mills C. C. Plitt 853 1904-7-30
GH: 01696259 Salvia lyrata Linnaeus USA: Maryland Cabin Branch C. C. Plitt 667 1903-5-15
GH: 01697101 Scutellaria elliptica Sprengel USA: Maryland Dickeyville C. C. Plitt 834 1904-6-19
Lecanoraceae FH: 00419174 Aspicilia cinerea (Linnaeus) Körber USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00419177 Aspicilia cinerea (Linnaeus) Körber USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00419364 Aspicilia obscurata (Fries) Zwackh USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00372670 Lecanora allophana (Acharius) Nylander USA: Maryland [data not captured] C. C. Plitt 1907-11-19
FH: 00372674 Lecanora allophana (Acharius) Nylander USA: Maryland [data not captured] C. C. Plitt 1906-1-30
FH: 00372968 Lecanora cenisia Acharius USA: Maryland [data not captured] C. C. Plitt 1911-8-31
FH: 00451043 Lecanora circumborealis Brodo & Vitikainen USA: Maryland [no additional data] C. C. Plitt 1906-9-1
FH: 00451044 Lecanora circumborealis Brodo & Vitikainen USA: Maryland [no additional data] C. C. Plitt 1906-12-4
FH: 00451045 Lecanora circumborealis Brodo & Vitikainen USA: Maryland [data not captured] C. C. Plitt 1906-12-4
FH: 00451063 Lecanora conferta (Duby ex Fries) Grognot USA: Maryland [data not captured] C. C. Plitt 1906-12-1
FH: 00451118 Lecanora cupressi Tuckerman USA: Maryland [data not captured] C. C. Plitt 1909-9-28
FH: 00451119 Lecanora cupressi Tuckerman USA: Maryland [data not captured] C. C. Plitt 1910-8-30
FH: 00451161 Lecanora dispersa (Persoon) Röhling USA: Maryland [data not captured] C. C. Plitt 1911-10-24
FH: 00451162 Lecanora dispersa (Persoon) Röhling USA: Maryland [data not captured] C. C. Plitt 1911-8-28
FH: 00451734 Lecanora pulicaris (Persoon) Acharius USA: Maryland [data not captured] C. C. Plitt 1906-1-30
FH: 00451738 Lecanora pulicaris (Persoon) Acharius USA: Maryland [data not captured] C. C. Plitt 1907-11-12
FH: 00438956 Lecanora sp. USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00438957 Lecanora sp. USA: Maryland [data not captured] C. C. Plitt 1909-9-28
FH: 00430124 Lecanora strobilina (Sprengel) Kieffer USA: Maryland [data not captured] C. C. Plitt 1909-9-21
FH: 00430125 Lecanora strobilina (Sprengel) Kieffer USA: Maryland [no additional data] C. C. Plitt 1907-10-22
FH: 00430127 Lecanora strobilina (Sprengel) Kieffer USA: Maryland [data not captured] C. C. Plitt 1909-9-21
FH: 00430128 Lecanora strobilina (Sprengel) Kieffer USA: Maryland [no additional data] C. C. Plitt 1908-3-31
FH: 00430129 Lecanora strobilina (Sprengel) Kieffer USA: Maryland [no additional data] C. C. Plitt 422
FH: 00451895 Lecanora subfusca (Linnaeus) Acharius USA: Maine Oakland: [no additional data] C. C. Plitt 1909-8-17
FH: 00451974 Lecanora subfusca (Linnaeus) Acharius USA: Maryland [data not captured] C. C. Plitt 1911-12-28
FH: 00452136 Lecanora valesiaca (Müller Arg.) Stizenberger USA: Maryland [data not captured] C. C. Plitt 1911-8-31
FH: 00452229 Lecanora varia (Hoffmann) Acharius USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00476120 Pyrrhospora elabens (Fries) Hafellner: Fries USA: New Jersey [data not captured] C. C. Plitt 1907
FH: 00476195 Pyrrhospora varians (Acharius) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00476120 Ramboldia elabens (Fries) Kantvilas & Elix USA: New Jersey [data not captured] C. C. Plitt 1907
Lecideaceae FH: 00419423 Bacidia De Notaris USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00419427 Bacidia De Notaris USA: Maryland [data not captured] C. C. Plitt 1908
FH: 00197683 Bacidia chlorosticta (Tuckerman) A. Schneider USA: New Jersey Allen Wood C. C. Plitt 1907-9-3
FH: 00197684 Bacidia chlorosticta (Tuckerman) A. Schneider USA: New Jersey Near Lakewood C. C. Plitt 1910-9-4
FH: 00419570 Bacidia inundata (Fries) Körber USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00419571 Bacidia inundata (Fries) Körber USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00419946 Bacidia schweinitzii (Fries ex Tuckerman) A. Schneider USA: Maryland [data not captured] C. C. Plitt 1908
FH: 00419997 Bacidia trachona (Acharius) Lettau USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00407703 Cliostomum griffithii (Smith) Coppins USA: Maryland [data not captured] C. C. Plitt 1909-11-30
FH: 00452705 Lecidea cyrtidia Tuckerman USA: New Jersey [data not captured] C. C. Plitt 1910-8-30
FH: 00430180 Lecidea plebeja Nylander USA: Maryland [data not captured] C. C. Plitt 1909-12-14
FH: 00452383 Lecidea sp. USA: Maine Cumberland: [no additional data] C. C. Plitt 1911
FH: 00452450 Lecidea sp. USA: New Jersey [data not captured] C. C. Plitt 1910
FH: 00452814 Lecidea sp. USA: Maryland [data not captured] C. C. Plitt 1911-1-14
FH: 00452815 Lecidea sp. USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00476195 Lecidea varians Acharius USA: Maryland [data not captured] C. C. Plitt 1910-3-1
Lejeuneaceae FH: 00500183 Leucolejeunea unciloba (Lindenberg) A. W. Evans USA: Maryland [data not captured] C. C. Plitt 1905-4-29
Leucobryaceae FH: 00844551 Leucobryum glaucum (Hedwig) Angstrom USA: Maryland [data not captured] C. C. Plitt 1908-1-21
Malvaceae A: 02201209 Hibiscus moscheutos Linnaeus USA: Maryland Baltimore: Back Shores C. C. Plitt 686 1899-8-9
Megalariaceae FH: 00453654 Megalaria laureri (Hepp ex Th. Fries) Hafellner USA: Maine Warren: [no additional data] C. C. Plitt 1909-8-21
FH: 00453657 Megalaria laureri (Hepp ex Th. Fries) Hafellner USA: Maryland [data not captured] C. C. Plitt 1906-11-17
FH: 00453663 Megalaria laureri (Hepp ex Th. Fries) Hafellner USA: Maryland [data not captured] C. C. Plitt 1906-11-17
FH: 00453664 Megalaria laureri (Hepp ex Th. Fries) Hafellner USA: Maryland [data not captured] C. C. Plitt 1906-11-17
FH: 00453665 Megalaria laureri (Hepp ex Th. Fries) Hafellner USA: Maryland [data not captured] C. C. Plitt 1906-11-17
Mniaceae FH: 00848194 Plagiomnium cuspidatum (Hedwig) T. J. Koponen USA: Maryland [data not captured] C. C. Plitt 1904-4-30
Monoblastiaceae FH: 00388153 Acrocordia megalospora (Fink) R. C. Harris USA: Maryland [no additional data] C. C. Plitt 208
FH: 00388970 Anisomeridium biforme (Borrer) R. C. Harris USA: Maine Warren: [data not captured] C. C. Plitt 1909
FH: 00388981 Anisomeridium biforme (Borrer) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00388982 Anisomeridium biforme (Borrer) R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00454368 Microthelia thelena (Acharius) Trevisan USA: Maryland [data not captured] C. C. Plitt 1907-11-19
FH: 00454370 Microthelia thelena (Acharius) Trevisan USA: Maryland [no additional data] C. C. Plitt 1910-4-20
Moraceae GH: 01544716 Broussonetia papyrifera (Linnaeus) Ventenat USA: Maryland Brooklyn C. C. Plitt 827 1904-5-17
GH: 01545387 Morus rubra Linnaeus USA: Maryland Shirley Lane C. C. Plitt 673 1899-5-27
Ochrolechiaceae FH: 00455659 Ochrolechia sp. USA: Maryland [no additional data] C. C. Plitt 1906-11-3
FH: 00455660 Ochrolechia sp. USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00455662 Ochrolechia sp. USA: Maryland [data not captured] C. C. Plitt 1907-11-12
Oleaceae GH: 01849307 Fraxinus pennsylvanica Marshall USA: Maryland Catonsville C. C. Plitt 847 1904-7-20
Onagraceae GH: 01644526 Oenothera laciniata Hill USA: Maryland Strong Creek C. C. Plitt 843 1904-7-9
Ophioparmaceae FH: 00450487 Hypocenomyce friesii (Acharius) P. James & Gotth. Schneider USA: Maryland [data not captured] C. C. Plitt 1907-3-30
FH: 00450488 Hypocenomyce friesii (Acharius) P. James & Gotth. Schneider USA: Maryland [data not captured] C. C. Plitt 1907-3-30
Orchidaceae AMES: 02066562 Platanthera ciliaris (Linnaeus) Lindley USA: Maryland Mt. Winans C. C. Plitt 687 1902-8-5
AMES: 02046756 Platanthera peramoena A. Gray USA: Maryland McDonough C. C. Plitt 852 1904-7-30
GH: 02029270 Tipularia discolor (Pursh) Nuttall USA: Maryland Brooklyn C. C. Plitt 683 1903-8-7
Orobanchaceae GH: 02033250 Aureolaria pedicularia (Linnaeus) Rafinesque USA: Maryland [illegible] Sta. C. C. Plitt 896 1904-8-30
GH: 01876382 Castilleja coccinea (Linnaeus) Sprengel USA: Maryland [illegible] C. C. Plitt 829 1905-6-3
Orthotrichaceae FH: 00824248 Orthotrichum strangulatum P. Beauvois USA: Maryland [data not captured] C. C. Plitt 1908-4-11
Pannariaceae FH: 00437180 Fuscopannaria leucophaea (Vahl) P. M. Jørgensen USA: Maryland [no additional data] C. C. Plitt 423 1909-10-22
FH: 00437185 Fuscopannaria leucophaea (Vahl) P. M. Jørgensen USA: Maryland [data not captured] C. C. Plitt
FH: 00437210 Fuscopannaria leucosticta (Tuckerman) P. M. Jørgensen USA: Maryland [data not captured] C. C. Plitt 64 1906-8-18
Parataeniellaceae FH: 00454678 Myelochroa aurulenta (Tuckerman) Elix & Hale USA: Maryland [data not captured] C. C. Plitt 1910-6-7
FH: 00454681 Myelochroa aurulenta (Tuckerman) Elix & Hale USA: Maryland [data not captured] C. C. Plitt 1910-11-26
FH: 00454737 Myelochroa galbina (Acharius) Elix & Hale USA: Maryland [no additional data] C. C. Plitt 1906-8-29
FH: 00454738 Myelochroa galbina (Acharius) Elix & Hale USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00454740 Myelochroa galbina (Acharius) Elix & Hale USA: Maryland [no additional data] C. C. Plitt
Parmeliaceae FH: 00388545 Allocetraria oakesiana (Tuckerman) T. Randlane & A. Thell USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00418033 Anzia colpodes (Acharius) Stizenberger USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00418055 Arctocetraria andrejevii (Oxner) Kärnefelt & A. Thell Canada: Newfoundland & Labrador [data not captured] C. C. Plitt 1921
FH: 00413156 Cetraria fendleri (Nylander) Tuckerman USA: New Jersey [data not captured] C. C. Plitt 1909
FH: 00413157 Cetraria fendleri (Nylander) Tuckerman USA: New Jersey [data not captured] C. C. Plitt 1909
FH: 00413160 Cetraria fendleri (Nylander) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00413161 Cetraria fendleri (Nylander) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00413422 Cetrelia olivetorum (Nylander) W. L. Culberson & C. F. Culberson USA: Maryland [data not captured] C. C. Plitt 454 1911
FH: 00439934 Flavoparmelia caperata (Linnaeus) Hale USA: New Jersey [data not captured] C. C. Plitt 1907-9-1
FH: 00438078 Hypotrachyna livida (Taylor) Hale USA: Maryland [data not captured] C. C. Plitt 1907-4-23
FH: 00438079 Hypotrachyna livida (Taylor) Hale USA: Maryland [data not captured] C. C. Plitt 1907-11-12
FH: 00438080 Hypotrachyna livida (Taylor) Hale USA: Maryland [data not captured] C. C. Plitt 1907-8-3
FH: 00438090 Hypotrachyna livida (Taylor) Hale USA: Maryland [data not captured] C. C. Plitt 24 1905-12-12
FH: 00438271 Imshaugia aleurites (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1906-8-29
FH: 00438274 Imshaugia aleurites (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1909-10-5
FH: 00438309 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1906-12-15
FH: 00438310 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1906-12-15
FH: 00438311 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1906-7-21
FH: 00438312 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 77 1906
FH: 00438313 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 77 1906
FH: 00438314 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1909-12-14
FH: 00438315 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1909-10-5
FH: 00438318 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00438319 Imshaugia placorodia (Acharius) S. L. F. Meyer USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00453846 Melanelixia fuliginosa (Fries ex Duby) O. Blanco, A. Crespo, P. K. Divakar, Esslinger, D. Hawksworth & Lumbsch USA: Maine [data not captured] C. C. Plitt 1909-8-18
FH: 00453994 Melanelixia subaurifera (Nylander) O. Blanco, A. Crespo, P. K. Divakar, Esslinger, D. Hawksworth & Lumbsch USA: Maine South Thomaston: [no additional data] C. C. Plitt 1909-8-20
FH: 00454189 Menegazzia terebrata (Hoffmann) A. Massalongo USA: Maryland [data not captured] C. C. Plitt 1906-3-24
FH: 01140656 Parmelia aurulenta Tuckerman USA: Maryland [data not captured] C. C. Plitt 1905-9-19
FH: 01140657 Parmelia aurulenta Tuckerman USA: Maryland [data not captured] C. C. Plitt 1910-6-7
FH: 00467962 Parmelia cetrarioides Delise USA: Maryland [data not captured] C. C. Plitt 1905-11-14
FH: 00467828 Parmelia perforata (Wulfen) Acharius USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00467829 Parmelia perforata (Wulfen) Acharius USA: Maryland [no additional data] C. C. Plitt 1910-7-16
FH: 00467833 Parmelia perforata (Wulfen) Acharius USA: North Carolina [data not captured] C. C. Plitt 2866
FH: 00467962 Parmelia perlata (Hudson) Acharius USA: Maryland [data not captured] C. C. Plitt 1905-11-14
FH: 00468122 Parmelia reticulata Taylor USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00468409 Parmelia saxatilis (Linnaeus) Acharius USA: Maryland [data not captured] C. C. Plitt 1911-12-19
FH: 00468410 Parmelia saxatilis (Linnaeus) Acharius USA: Maryland [data not captured] C. C. Plitt 1911-12-19
FH: 00467916 Parmelia sp. USA: Maryland [no additional data] C. C. Plitt 1909-9-19
FH: 00468122 Parmelia sp. USA: Maryland [no additional data] C. C. Plitt 1909
FH: 01141128 Parmeliopsis aleurites (Acharius) Nylander USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00469083 Parmeliopsis hyperopta (Acharius) Vainio USA: Maryland [data not captured] C. C. Plitt 1909-9-11
FH: 00469120 Parmeliopsis subambigua Gyelnik USA: Maryland [data not captured] C. C. Plitt 1909-12-12
FH: 00492128 Tuckermannopsis americana (Sprengel) Hale Canada: Alberta [data not captured] C. C. Plitt 4521 1929-8-12
FH: 00492129 Tuckermannopsis americana (Sprengel) Hale Canada: Alberta [data not captured] C. C. Plitt 4153 1929-6-3
FH: 00492193 Tuckermannopsis ciliaris (Acharius) Gyelnik USA: Maryland [data not captured] C. C. Plitt 1906-12-15
FH: 00492195 Tuckermannopsis ciliaris (Acharius) Gyelnik USA: Maryland [data not captured] C. C. Plitt 1906-3-17
FH: 00492196 Tuckermannopsis ciliaris (Acharius) Gyelnik USA: Maryland [data not captured] C. C. Plitt 1909-12-14
FH: 00493653 Usnea florida (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 1908-12-15
FH: 01141751 Usnea florida (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 1905-12-12
FH: 01141752 Usnea florida (Linnaeus) Weber ex F. H. Wiggers USA: Maryland [data not captured] C. C. Plitt 1905-1-30
FH: 00493825 Usnea mutabilis Stirton USA: Maryland [data not captured] C. C. Plitt 1906-1-30
FH: 00493826 Usnea mutabilis Stirton USA: Maryland [data not captured] C. C. Plitt 1906-1-30
FH: 00372583 Usnea strigosa (Acharius) Eaton USA: Maryland [data not captured] C. C. Plitt 26 1906-1-30
FH: 00494029 Usnea trichodea Acharius USA: New Jersey [data not captured] C. C. Plitt 1908-9-4
FH: 00494032 Usnea trichodea Acharius USA: Maryland [data not captured] C. C. Plitt 1906-1-30
FH: 00494033 Usnea trichodea Acharius USA: Maryland [data not captured] C. C. Plitt
FH: 00494064 Usnea tristis Motyka USA: Maryland [no additional data] C. C. Plitt 1905-9-23
Pertusariaceae FH: 00470962 Pertusaria amara (Acharius) Nylander USA: New Jersey [data not captured] C. C. Plitt 1910-8-30
FH: 00471139 Pertusaria leioplaca de Candolle USA: Maine Warren: [no additional data] C. C. Plitt 1909-8-21
FH: 00471143 Pertusaria leioplaca de Candolle USA: Maine Rockland: [no additional data] C. C. Plitt 1909-8-20
FH: 00471169 Pertusaria leioplaca de Candolle USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00471170 Pertusaria leioplaca de Candolle USA: Maryland [data not captured] C. C. Plitt 1909-9-14
FH: 00471301 Pertusaria multipuncta (Turner) Nylander USA: Maine Camden: [data not captured] C. C. Plitt 1909-8-22
FH: 00471318 Pertusaria multipuncta (Turner) Nylander USA: Connecticut Georgetown: [no additional data] C. C. Plitt 1909-8-26
FH: 00471332 Pertusaria multipuncta (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1909-9-28
FH: 00471333 Pertusaria multipuncta (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1905
FH: 00471334 Pertusaria multipuncta (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1905-9-23
FH: 00471337 Pertusaria multipuncta (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00471432 Pertusaria pertusa (Linnaeus) Tuckerman USA: Maryland [data not captured] C. C. Plitt 1910-6-7
FH: 00471498 Pertusaria pustulata (Acharius) Duby USA: Maryland [no additional data] C. C. Plitt 1911-3-19
FH: 00471504 Pertusaria pustulata (Acharius) Duby USA: Delaware [data not captured] C. C. Plitt 1911
FH: 00471570 Pertusaria velata (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1905-12-12
FH: 00471572 Pertusaria velata (Turner) Nylander USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00471684 Pertusaria wulfenii de Candolle USA: Maine Rockland: [data not captured] C. C. Plitt 1909-8-19
Physciaceae FH: 00388892 Anaptychia palmulata (Michaux) Vainio USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00388894 Anaptychia palmulata (Michaux) Vainio USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00388893 Anaptychia palmulata (Michaux) Vainio USA: Maryland [data not captured] C. C. Plitt 1906
FH: 00388895 Anaptychia palmulata (Michaux) Vainio USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00388896 Anaptychia palmulata (Michaux) Vainio USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00450226 Heterodermia hypoleuca (Muhlenberg) Trevisan USA: Maryland [data not captured] C. C. Plitt 88 1906-9-18
FH: 00450227 Heterodermia hypoleuca (Muhlenberg) Trevisan USA: Maryland [data not captured] C. C. Plitt 65 1906-8-18
FH: 00450229 Heterodermia hypoleuca (Muhlenberg) Trevisan USA: Maryland [no additional data] C. C. Plitt 1905
FH: 00450323 Heterodermia obscurata (Nylander) Trevisan USA: Maryland [data not captured] C. C. Plitt 24b 1906-1-30
FH: 00450392 Heterodermia speciosa (Wulfen) Trevisan USA: New Jersey [data not captured] C. C. Plitt 1906
FH: 00450396 Heterodermia speciosa (Wulfen) Trevisan USA: Maryland [data not captured] C. C. Plitt 1910-4
FH: 00450397 Heterodermia speciosa (Wulfen) Trevisan USA: Maryland [no additional data] C. C. Plitt 2 1905
FH: 00450455 Hyperphyscia syncolla (Tuckerman ex Nylander) Kalb USA: New Jersey [data not captured] C. C. Plitt 1906
FH: 00478358 Phaeorrhiza nimbosa (Fries) H. Mayrhofer & Poelt USA: Colorado [data not captured] C. C. Plitt
Plantaginaceae GH: 02000624 Kickxia elatine (Linnaeus) Dumortier USA: Maryland [data not captured] C. C. Plitt 850 1904-7-6
GH: 01805705 Veronica hederifolia Linnaeus USA: Maryland [data not captured] C. C. Plitt 824 1904-5-14
GH: 01811345 Veronica persica Poiret USA: Maryland [data not captured] C. C. Plitt 831 1904-6-12
Polygalaceae GH: 01968364 Polygala senega Linnaeus USA: Maryland Franklin Rd. C. C. Plitt 677 1902-6-2
Polytrichaceae FH: 00522389 Atrichum angustatum (Bridel) Bruch & Schimper USA: Maryland [data not captured] C. C. Plitt 1904-3
Porellaceae FH: 00506103 Madotheca sp. USA: Maryland [data not captured] C. C. Plitt 1905-3-7
Porpidiaceae FH: 00474327 Porpidia albocaerulescens (Wulfen) Hertel & Knoph USA: Maryland [no additional data] C. C. Plitt 1910-7-16
FH: 00474328 Porpidia albocaerulescens (Wulfen) Hertel & Knoph USA: Maryland [no additional data] C. C. Plitt 1909
FH: 00474330 Porpidia albocaerulescens (Wulfen) Hertel & Knoph USA: Maryland [data not captured] C. C. Plitt 1909
FH: 00474458 Porpidia macrocarpa (de Candolle) H. Hertel & A. J. Schwab USA: Maryland [data not captured] C. C. Plitt 1910
FH: 00474459 Porpidia macrocarpa (de Candolle) H. Hertel & A. J. Schwab USA: Maryland [data not captured] C. C. Plitt 1911-9-9
FH: 00474460 Porpidia macrocarpa (de Candolle) H. Hertel & A. J. Schwab USA: Maryland [no additional data] C. C. Plitt 1911
FH: 00474377 Porpidia sp. USA: Maryland [data not captured] C. C. Plitt 1910
Psoraceae FH: 00475604 Psorula rufonigra (Tuckerman) Gotth. Schneider USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00475605 Psorula rufonigra (Tuckerman) Gotth. Schneider USA: Maryland [data not captured] C. C. Plitt 1909-10-12
Pyrenopsidaceae FH: 00473640 Placynthium nigrum (Hudson) Gray USA: Maryland [data not captured] C. C. Plitt 1911-12-23
FH: 00473643 Placynthium nigrum (Hudson) Gray USA: Maryland [no additional data] C. C. Plitt 1911-4-25
Pyrenulaceae FH: 00453056 Lithothelium septemseptatum (R. C. Harris) Aptroot USA: Maryland [data not captured] C. C. Plitt 1911-1-14
FH: 00475632 Pyrenastrum sp. USA: Maryland [data not captured] C. C. Plitt 1910-3-1
Pyrolaceae GH: 00310698 Schweinitzia odorata (Schweinitz) Rafinesque USA: Maine Arundel: Benfield, Anne C. C. Plitt 652 1903-3-28
Ramalinaceae FH: 00408296 Biatora vernalis (Linnaeus) Fries USA: Maine Camden: [data not captured] C. C. Plitt 1909
FH: 01141301 Platysma fendleri Nylander USA: New Jersey [data not captured] C. C. Plitt 1909-8-29
FH: 01139777 Platysma sp. USA: Maryland [data not captured] C. C. Plitt 1914
Ranunculaceae GH: 01661048 Halerpestes cymbalaria (Pursh) Green USA: Maryland Middle of Baltimore Co. C. C. Plitt 858 1904-8-6
GH: 01838065 Ranunculus sceleratus Linnaeus USA: Maryland Baltimore: Back Shore C. C. Plitt 666 1903-5-16
Rosaceae GH: 01606180 Filipendula rubra (Hill) B. L. Robinson USA: Maryland Lutherville C. C. Plitt 864 1905-8-8
GH: 01610601 Geum vernum (Raf.) Torr. & A. Gray USA: Maryland Loch Raven C. C. Plitt 826 1904-5-14
GH: 01566489 Potentilla anserina Linnaeus USA: Maryland Baltimore: S. Baltimore. C. C. Plitt 828 1904-5-22
Scapaniaceae FH: 00497506 Diplophyllum apiculatum (A. W. Evans) Stephani USA: Maryland [data not captured] C. C. Plitt 1905-3-18
Solanaceae GH: 01563518 Petunia parviflora Jussieu USA: Maryland Canton C. C. Plitt 820 1904-7-6
Stereocaulaceae FH: 00480452 Stereocaulon tomentosum Th. Fries USA: Colorado [data not captured] C. C. Plitt 1918-7-20
Strigulaceae FH: 00480756 Strigula americana R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00480758 Strigula americana R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1910-3-1
FH: 00480759 Strigula americana R. C. Harris USA: Maryland [data not captured] C. C. Plitt 1911-7-19
Teloschistaceae FH: 00409219 Athallia holocarpa (Hoffmann) Arup, Frödén & Søchting USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409220 Athallia holocarpa (Hoffmann) Arup, Frödén & Søchting USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00409221 Athallia holocarpa (Hoffmann) Arup, Frödén & Søchting USA: Maryland [data not captured] C. C. Plitt 1907
FH: 00409222 Athallia holocarpa (Hoffmann) Arup, Frödén & Søchting USA: Maryland [data not captured] C. C. Plitt 1907
Theliaceae FH: 01133460 Thelia asprella (Schimper) Sullivant USA: Maryland [data not captured] C. C. Plitt 1905-3-28
Thuidiaceae FH: 00537510 Anomodon rostratus (Hedwig) Schimper USA: Maryland [data not captured] C. C. Plitt 1908-3-28
FH: 00537520 Anomodon rostratus (Hedwig) Schimper USA: Maryland [data not captured] C. C. Plitt 1908-3-28
FH: 00836010 Haplocladium microphyllum (Hedwig) Brotherus USA: New Jersey [data not captured] C. C. Plitt 1908-9-7
FH: 00836015 Haplocladium microphyllum (Hedwig) Brotherus USA: New Jersey [data not captured] C. C. Plitt 1908-9-7
Trapeliaceae FH: 00491598 Trapelia coarctata (Turner ex Smith) M. Choisy USA: Maryland [no additional data] C. C. Plitt 1911-9-9
Trichocoleaceae FH: 00511648 Trichocolea tomentella Dumortier USA: Maryland [data not captured] C. C. Plitt 1906-6-5
Trypetheliaceae FH: 00492055 Trypethelium virens Tuckerman ex E. Michener USA: New Jersey [data not captured] C. C. Plitt 1907
FH: 00492061 Trypethelium virens Tuckerman ex E. Michener USA: Maryland [data not captured] C. C. Plitt 1907-3-26
FH: 00492062 Trypethelium virens Tuckerman ex E. Michener USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00492063 Trypethelium virens Tuckerman ex E. Michener USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00492055 Viridothelium virens (Tuckerman ex E. Michener) Lücking, M. P. Nelsen & Aptroot USA: New Jersey [data not captured] C. C. Plitt 1907
FH: 00492061 Viridothelium virens (Tuckerman ex E. Michener) Lücking, M. P. Nelsen & Aptroot USA: Maryland [data not captured] C. C. Plitt 1907-3-26
FH: 00492062 Viridothelium virens (Tuckerman ex E. Michener) Lücking, M. P. Nelsen & Aptroot USA: Maryland [data not captured] C. C. Plitt 1911
FH: 00492063 Viridothelium virens (Tuckerman ex E. Michener) Lücking, M. P. Nelsen & Aptroot USA: Maryland [data not captured] C. C. Plitt 1911
Umbilicariaceae FH: 00438475 Lasallia papulosa (Acharius) Llano USA: Maryland [data not captured] C. C. Plitt 1907-4-27
FH: 00438476 Lasallia papulosa (Acharius) Llano USA: Maryland [data not captured] C. C. Plitt 1908-9-19
FH: 00438558 Lasallia pennsylvanica (Hoffmann) Llano USA: Maryland [data not captured] C. C. Plitt 1908-9-19
FH: 00438559 Lasallia pennsylvanica (Hoffmann) Llano USA: Maryland [data not captured] C. C. Plitt 1908-9-19
Urticaceae GH: 02171125 Urtica dioica Linnaeus USA: Maryland [data not captured] C. C. Plitt 840 1904-7-6
Usneaceae FH: 00476548 Ramalina americana Hale USA: New Jersey [data not captured] C. C. Plitt 1906
FH: 00476549 Ramalina americana Hale USA: Maryland [data not captured] C. C. Plitt 1905-10-28
FH: 00476550 Ramalina americana Hale USA: New Jersey [data not captured] C. C. Plitt 1906
FH: 00476553 Ramalina americana Hale USA: Maryland [no additional data] C. C. Plitt
FH: 00476555 Ramalina americana Hale USA: Maryland [data not captured] C. C. Plitt 1905-10-28
FH: 00476556 Ramalina americana Hale USA: Maryland [data not captured] C. C. Plitt 1905-10-28
FH: 00476876 Ramalina farinacea (Linnaeus) Acharius Canada: Alberta [data not captured] C. C. Plitt 4192 1929-6-8
Verbenaceae GH: 01953661 Phyla lanceolata (Michaux) Greene USA: Maryland Gunpowder R. C. C. Plitt 865 1904-8-16
GH: 01955745 Verbena simplex Lehmann USA: Maryland Gwynn's Falls C. C. Plitt 832 1904-6-18
Verrucariaceae FH: 00473414 Placidium lachneum (Acharius) B. de Lesdain USA: Maryland [data not captured] C. C. Plitt 1909-11-12
FH: 00473415 Placidium lachneum (Acharius) B. de Lesdain USA: Maryland [data not captured] C. C. Plitt 383 1911-4-25
FH: 00473416 Placidium lachneum (Acharius) B. de Lesdain USA: Maryland [data not captured] C. C. Plitt 193 1909
FH: 00473417 Placidium lachneum (Acharius) B. de Lesdain USA: Maryland [data not captured] C. C. Plitt 1909-11-12
Violaceae GH: 02144371 Hybanthus concolor (T. F. Forster) Sprengel USA: Maryland Catonsville C. C. Plitt 825 1904-5-14
