Calkins, N. Am. Lich.
W. W. Calkins

Field Museum of Natural History
Catalog #: C1012055F
a1483b15-c1ae-4131-a93a-22071a5b84ab
W. W. Calkins #195
Verrucaria marmorea (Scop.) Arnold
U.S.A., Tennessee, Lookout Mountain