Gloeosporium pteridis Harkn.

UNITED STATES DEPARTMENT OF AGRICULTURE
Bureau of Plant Indtjstby
Ex. 60994	-
Pathological and Mycological Collections
Gloeosporium pteridis Hark#
on Pfceris aquilina
Missoula, Mont,	Sept, 10,
Coll» & Dot* Williams & Griffiths
03430234