Menyanthes L.
Bottom-rooting, rhizomatous, aquatic or subaquatic herbs. Lvs alternate, 3-foliolate, entire, ± obovate; basal lvs not in rosettes; petioles easily distinguishable from stem. Fls in racemes produced on a leafless, emergent scape, on short pedicels, not ephemeral. Corolla white, prominently fimbriate. Stamens almost = corolla tube, inserted near its base. Ovary superior; style exserted. Capsule 2-valved.
1 sp. N. America, Europe. Naturalised sp. 1.