Citation: Miller, Gard. Dict. Abr. edn 4 (1754).

Derivation: Greek damazo, to subdue, because one species was said to overcome poison.

Synonymy: Not Applicable

Common name: None

Description:
Aquatic plants; leaf blade lanceolate to ovate or elliptic, often cordate at the base.

Flowers bisexual; inflorescence a verticillate pyramidal usually compound panicle; stamens 6, in pairs opposite the petals; filaments fillform; carpels 6-10, in 1 whorl, connate at the base; style apical, narrowly conical.

Fruit spreading 2-seeded achenes.

Distribution:  5 species from Europe, North Africa, Asia, North America and 1 in Australia.

Biology: No text

Author: Not yet available