Exsiccatae

Decades of North American lichens #176
Cummings, Williams & Seymour, Dec. N. Amer. Lich. [Wellesley (Massachusetts)]
Clara Eaton Cummings, Thomas Albert Williams & Arthur Bliss Seymour [151-360]

IndExs #826153814

Bell Museum lichens
Catalog Number: 735191
Williams, T. s.n.
Arthonia dispersa (Schrad.) Nyl.
United States, Nebraska,