Wolffia columbiana H.Karst.

Noted, 1970
Michigan Flora Project
University of Michigan
NEW YORK BOTANICAL GARDEN
03700853
PLANTS OF SOUTHEASTERN MICHIGAN
Washtenaw County
C£>As/77 s?(2, Aæat/
(
//»//"os? Titrer «y/
Geat/as /4*c.
*/z
F. J. Hermann 6 fff
ANN ARBOR
/?3S~
03700853