Cummings, Williams & Seymour: Lich. Bor.-Amer.
Francis W. Pennell [1-280]

Oregon State University Herbarium - Lichens
Catalog #: 51949
d92aa87e-694f-4a69-b2e1-b97cc3af4f0e
Arthur Morgan #Morgan N.A.L.334 01 August 1898
Acarospora fuscata (Schrad.) Arnold
United States, Colorado, Sugar Loaf