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 #: 116510
8aa64140-ba62-442c-a66f-7d50323de26e
T. A. Williams #s. n. 00 March 1898
Parmeliopsis placorodia (Ach.) Nyl.
United States, Washington, D.C., no data, Rock Creek

Academy of Natural Sciences of Drexel University - Lichens
Catalog #: PH00088756
Thomas A. Williams #s.n. 00 March 1898
Parmeliopsis placorodia (Ach.) Nyl.
USA, Maryland, Rock Creek, District of Columbia.

University of Wisconsin - Madison
Catalog #: WIS-L-0087770
Thomas A. Williams #s.n. 00 March 1898
Parmeliopsis placorodia (Ach.) Nyl.
United States, District of Columbia, Rock Creek, District of Columbia.

University of Nebraska State Museum, C.E. Bessey Herbarium - Lichens
Catalog #: NEB00026569
Thos. A. Williams #s.n. 00 March 1898
Cetraria aleurites (Ach.) Th. Fr.
USA, District of Columbia, Rock Creek

Willard Sherman Turrell Herbarium, Miami University
Catalog #: 000159242
Williams, Thomas A. #s.n. 00 March 1898
Imshaugia placorodia (Ach.) S. F. Meyer
United States, District of Columbia, Rock Creek