Nuphar polysepala Engelm.

TAXONOMIC REVISION OF THE GENUS NUPHAR SM.
ERNEST O. BEAU HERBARIUM OF THE STATE UNIV. OF IOWA
IOWA CITY, IOWA USA AUG. 1954
NUPHAR LUTEUM (L.) SIBTH. 8c SM.
IN FL. GRAEC. PRODR. 1:361.1808 (1809)
subsp. polysepalum (Engelm.) Beal
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