Decades of North American Lichens.
PREPARED BY CLARA E. CUMMINGS AND A. B. SEYMOUR.

137. Pertusaria leioplaca, (Ach.) Schaer.

On old rail fences.

Van Buren, Aroostook Co. Me., July, 1893.

Coll. Clara E. Cummings and Emma A. Teller.

Yale University Herbarium

YU.238193

SHEFFIELD SCIENTIFIC SCHOOL,
DANIEL C. EATON COLLECTION.