Family: Hydrocharitaceae
Vallisneria
Citation:
L., Sp. Pl. 1015 (1753).
Derivation: After Antonio Vallisnieri, 1661-1730, an Italian doctor and botanist.
Synonymy: Not Applicable Common name: None
Description:
Fresh water, submerged perennials with a stolon; leaves in tufts along the stolons or alternate or opposite along them, linear, strap-shaped, glabrous.
Flowers dioecious, within a spathe; male flowers small and numerous in a head, becoming detached and free-floating, with 3 sepals and no petals; female flowers solitary, with 3 sepals and 3 petals; stamens 2 or 3, the filaments partly united; ovary with 3 placentas, which are often obscure, and 3 sessile stigmas.
Fruit narrow-cylindrical, many-seeded.
Distribution:
|
6-10 species from the tropics and subtropics; 3 in Australia.
|
|
|
Biology:
No text
Author:
Prepared by J.P. Jessop
|