Spirodela polyrhiza (L.) Schleid.

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NEW YORK BOTANICAL GARDEN
03700728
NEW YORK BOJANICAL GARDEN
NEW YORK BOTANICAL GARDEN
NEWYORK BOTANICAL GARDEN
03700730
03700731
03700729
Herb. Wm. M. Cakby, Wilmington, Delaware.
Herb. Wm. M. Caxby, Wilmington, Delaware.
Flora or North America.
Flora of Nobth America.
03700728
03700730
03700731
03700729