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

Field Museum of Natural History
Catalog #: C0350477F
5aac984a-48a1-4304-a1e0-fe22b9eb402c
W. W. Calkins #247
Arthonia platygraphidea Nyl.
U.S.A., Florida, Duval

Field Museum of Natural History
Catalog #: C1012029F
9c616e56-c058-44d7-b38a-5d1ba684647f
W. W. Calkins #247 00 January 1890
Verrucaria marmorea (Scop.) Arnold
U.S.A., Tennessee, Lookout Mountain