Curly Waterweed, Lagarosiphon major

Overview

Short description of Lagarosiphon major, Curly Waterweed

Curly waterweedis a perennial, submerged dioecious plant with branched stems and strongly recurved leaves alternate or spiralled or rarely in whorls up the stem., with two rows of fibre-like cells on the margins with > 50 teeth on each side.

Description of Lagarosiphon major, Curly Waterweed status in GB

Curly waterweed is widely naturalised and invasive throughout southern GB, becoming scattered further north.

Habitat summary: Lagarosiphon major, Curly Waterweed

In its native range, it occurs streams and ponds at high altitudes. In GB, it occurs in still or very slow-flowing water, principally in eutrophic, calcareous canals, ponds, lakes and gravel pits.

Overview table

Environment: Freshwater
Species status: Non-Native
Native range: Southern Africa
Functional type: Land plant
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: v.c.30 (Nr. Arlesley)
Date of first record: 1944

Distribution map

GB Distribution from BSBI

Author's name:

R.V. Lansdown (edited by Kevin Walker, June 2017)

Last updated:

October 2nd 2019

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Thin strip of image show tree trunk and bark