Hydrocharis morsus-ranae L.
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Hydrocharis morsus-ranae L. [Hydrocharitaceae]
T.F.L. Nees von Esenbeck, F.KL. Spenner, A. Putterlick, J.X.R. Caspary, Gen. Fl. Germ., vol. 3 (Monocotyledones 2 Cyperaceae etc): (1845)