Cummings, Williams & Seymour, Lich. Bor.-Amer. [Wellesley (Massachusetts)]
Cummings, C.E.; Williams, T.A.; Seymour, A.B. [1-280]
IndExs #238641321

Academy of Natural Sciences of Drexel University - Lichens
Catalog #: PH00097819
H. A. Green #254 25 February 1899
Pyrenula leucostoma Ach.
United States, North Carolina, Polk, Tryon.