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

University of Wisconsin - Madison
Catalog #: WIS-L-0087807
T.A. Williams #s.n. 00 December 1898
Pycnothelia papillaria Dufour
United States, District of Columbia, Rock Creek

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00035343
Thos. A. Williams #s.n. 00 December 1898
Pycnothelia papillaria Dufour
USA, District of Columbia, Rock Creek.

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00035355
Thos. A. Williams #s.n. 00 December 1898
Pycnothelia papillaria Dufour
USA, District of Columbia, Rock Creek

Willard Sherman Turrell Herbarium, Miami University
Catalog #: 000156555
Williams, Thomas A. #s.n. 00 December 1898
Pycnothelia papillaria Dufour
United States, District of Columbia, Rock Creek

Duke University Herbarium Lichen Collection
Catalog #: 304286
27b436f5-8eb8-4603-baa5-503fedfae29e
Williams, Thomas, A. #s.n. 00 December 1898
Pycnothelia papillaria Dufour
United States, Maryland, Montgomery Co., Rock Creek