Callitriche hermaphroditica L. [ Callitriche autumnalis L.]
no HD illustration available (m1)
Callitriche hermaphroditica L. [Callitrichaceae]
J. Sturm, E.H.L. Krause, K.G. Lutz, Deutschl. Fl., ed. 2, vol. 7 : t. 38, fig. 2 (1902)