Citation: L., Sp. Pl. 969 (1753).

Derivation: After G. G. Zannichelli, 1662-1729, an Italian botanist.

Synonymy: Not Applicable

Common name: None

Description:
Annual or perennial monoecious submerged herb; stems much-branched; leaves mostly opposite, very narrow-linear, not sheathing at the base but with a sheathing membranous stipule free of the leaf; squamules filiform.

Flowers usually unisexual, axillary; female flower with a cup-shaped perianth and 2-8 free carpels, each carpel with a short style and a large asymmetrical funnel-shaped stigma; male flower consisting only of a single anther inserted at the base of the female flower.

A single very variable species.

Distribution:  Cosmopolitan.

Biology: No text

Author: Not yet available