Fragilaria Lyngb.

03243327
Field Museum of Natural tfistory	i .......
Aigae Donated to NY in 2015	/
The Academy of Natural Sciences of Philadelphia
MEXICO
# 144	state of fomcxfyusi Hidalgo
Spring 100 ft. above Arroya de Santiago,
0.7 mi. south of Zimapan, route C. N. 1.
Temp. 22° C. pH 7.8
u ., -D , . , ...	July 16, 1947
Ruth Patrick, Collector	v
Under grant of American Philosophical Society