Cummings, Williams & Seymour, Lich. Bor.-Amer. [Wellesley (Massachusetts)]
Cummings, C.E.; Williams, T.A.; Seymour, A.B. [1-280]
IndExs #238641321

New York Botanical Garden
Catalog #: 4440533
4eae5b5b-ea9a-4d01-a269-d84efb2f1c0b
s.n.
Endocarpon arboreum Schwein.

Montana State University Herbarium - Lichen
Catalog #: MONT-L-0004632
M. A. Howe #149 02 June 1896
Nephroma laevigatum Ach.
United States, California, Humboldt, Eureka

University of Michigan Herbarium
Catalog #: 79386
728577bd-d435-4573-9f68-4e8122e1fd39
T. A. Williams #s. n. 00 May 1898
Catapyrenium tuckermanii (Rav. ex Mont.) J.W. Thomson
United States, Maryland, no data, Sligo Creek

University of Vermont, Pringle Herbarium, North American lichens
Catalog #: UVMVT015536
T. A. Williams #s.n. 00 May 1898
Dermatocarpon Eschw.
United States of America, Maryland, Sligo Creek

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0035488
T.A. Williams #L 46671 00 May 1898
Placidium arboreum (Schw. ex Michener) Lendemer
United States, Maryland, Sligo Creek

University of Colorado, Museum of Natural History Herbarium Lichen Collection
Catalog #: COLO-L-0035441
T.A. Williams #L 80015 00 May 1898
Placidium arboreum (Schw. ex Michener) Lendemer
United States, Maryland, Sligo Creek

Montana State University Herbarium - Lichen
Catalog #: MONT-L-0001184
Thomas A. Williams #s.n. 00 May 1898
Catapyrenium tuckermanii (Rav. ex Mont.) J.W. Thomson
United States, Maryland, Sligo Creek; Sligo Creek (tributary of Anacostia River)

University of California Berkeley, University Herbarium
Catalog #: UC1939357
54587ea5-05b7-4146-980a-39c76506d2b3
Thomas A. Williams #s.n. 00 May 1898
Placidium arboreum (Schw. ex Michener) Lendemer
United States, Maryland, Montgomery, Sligo Creek

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00029273
Thos. A. Williams #=N.A.L. 287 00 May 1898
Endocarpon arboreum Schwein.
USA, Maryland, Sligo Creek.