Puccinia obtecta Peck

UNITED STATES DEPARTMENT OF AGRICULTURE
_______Bureau op Plant Industry
iix. 60796	_
Pathological and Mycoloqical Collections
Puccinia obtecta Pk#
on Scirpus americanus
Block Island, B* I#	Sept# 29, 1919 )
Coll# G. G. Hedgcock	Det® G# B. Cummins
• ro 8—7284
NEW YORK BOTANICAL GARDEN
03411257