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

University of Michigan Herbarium
Catalog #: 132991
189d3bd3-69a3-4cec-aebf-1b618aa56a80
T. A. Williams #s. n.
Xanthoparmelia taractica (Kremp.) Hale
United States, Maryland, no data, Sligo Creek

University of Wisconsin - Madison
Catalog #: WIS-L-0087820
Thomas A. Williams #s.n.
Xanthoparmelia stenophylla (Ach.) Ahti & D. Hawksw
United States, Maryland, Slige Creek

Willard Sherman Turrell Herbarium, Miami University
Catalog #: 000158851
Williams, Thomas A. #s.n.
Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale
United States, Maryland, Montgomery, Sligo Creek