Cummings, Williams & Seymour, Dec. N. Amer. Lich. [Wellesley (Massachusetts)]Clara Eaton Cummings, Thomas Albert Williams & Arthur Bliss Seymour [151-360]
Bell Museum lichens
Catalog (Accession) #: 735192
Williams, T. s.n.
Graphis scripta var. serpentina (Ach.) G. Mey.
United States, South Dakota,
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