Cummings, Williams & Seymour, Dec. N. Amer. Lich. [Wellesley (Massachusetts)]
Clara Eaton Cummings, Thomas Albert Williams & Arthur Bliss Seymour [151-360]
IndExs #826153814

Yale University Herbarium, Peabody Museum of Natural History
Catalog #: YU.236717
urn:uuid:5B624257-4C89-41A4-BB19-0AA6C38688C7
Thomas A. Williams s.n. 00 December 1897
Coccocarpia pellita (Ach.) Müll.Arg.
United States, Maryland, Prince George's, Sligo Creek

Yale University Herbarium, Peabody Museum of Natural History
Catalog #: YU.236718
urn:uuid:62F41D69-19F5-4A3E-A58A-C40D4D2D1370
Thomas A. Williams s.n. 00 December 1897
Coccocarpia pellita (Ach.) Müll.Arg.
United States, Maryland, Prince George's, Sligo Creek

University of Wisconsin - Madison
Catalog #: WIS-L-0087763
Thomas A. Williams #s.n. 00 December 1897
Coccocarpia palmicola (Sprengel) Arv. & D. J. Galloway
United States, Maryland, Prince George's, along Sligo Creek

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00032511
Thos. A. Williams #s.n. 00 December 1897
Pannaria molybdaea var. cronia (Tuck.) Tuck.
USA, Maryland, Sligo Creek.

Willard Sherman Turrell Herbarium, Miami University
Catalog #: 000157165
Williams, Thomas A. #s.n. 00 December 1897
Coccocarpia erythroxyli (Sprengel) Swinscow & Krog
United States, Maryland, Montgomery, Sligo Creek

California Academy of Sciences Lichen dataset
Catalog #: 489282
Williams, Thomas Albert #273 00 December 1897
Coccocarpia cronia (Tuck.) Vain.
United States, Maryland, Montgomery County, Sligo Creek

Duke University Herbarium Lichen Collection
Catalog #: 221768
25ef61c0-fbe1-4fa4-b622-aea3b8129bab
Williams, Thomas, A. #s.n. 00 December 1897
Coccocarpia palmicola (Sprengel) Arv. & D. J. Galloway
United States, Maryland, Montgomery Co., Sligo Creek [Prince Georeges or Montgomery County?]