xx Callitriche palustris L. [ Callitriche stellata Hoppe]
no HD illustration available (m1)
xx Callitriche palustris L. [Callitrichaceae]
J. Sturm, E.H.L. Krause, K.G. Lutz, Deutschl. Fl., ed. 2, vol. 7 : t. 37, fig. 2b (1902)