Cummings & Seymour, Dec. N. Amer. Lich. [Wellesley (Massachusetts)]
Clara Eaton Cummings, T.A. Williams & Arthur Bliss Seymour [1-150]
IndExs #938157617

New York Botanical Garden
Catalog #: 4440309
5738fa02-c0b2-4447-aad9-1d395efb5e8e
s.n.
Lecidea crustulata (Ach.) Spreng.

New York Botanical Garden
Catalog #: 04440346
414e4496-3f70-4b8b-aa99-6120f103db1f
s.n.
Lecidea crustulata (Ach.) Spreng.

University of California Berkeley, University Herbarium
Catalog #: UC1939719
e9e97748-a4a9-444b-bdb0-de50f22d857c
Thomas A. Williams #s.n.
Porpidia crustulata (Ach.) Hertel & Knoph
United States, Maryland, Takoma Park, D.C.

Ohio State University Herbarium
Catalog #: OS0005630
Thomas A. Williams #s.n. 00 April 1898
Lecidea crustulata (Ach.) Spreng.
United States, Maryland, Montgomery, Takoma Park

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00035054
Thos. A. Williams #s.n. 00 May 1898
Porpidia crustulata (Ach.) Hertel & Knoph
USA, District of Columbia, Takoma Park.

Duke University Herbarium Lichen Collection
Catalog #: 303412
2ce52829-df2b-43df-bf54-050ede81b07c
Williams, Thomas, A.; Snell, Ethel #s.n. 00 April 1898
Porpidia crustulata (Ach.) Hertel & Knoph
United States, Maryland, Montgomery Co., Takoma Park