Devil's Tongue Weed, Grateloupia turuturu

Overview

Short description of Grateloupia turuturu, Devil's Tongue Weed

A large red seaweed; deep red to purple in colour, sometimes bleaching to light brown in summer.  One to six elongated, lance-shaped blades up to 15 cm in width and 1m in length arise from a disc holdfast via a short stipe.  The plant is thick and firm with a mucilaginous texture which is slippery to touch.  Also occurs as a crustose form.

Description of Grateloupia turuturu, Devil's Tongue Weed status in GB

Devil’s tongue weed occurs along the southeast coast of England and in Pembrokeshire.

Habitat summary: Grateloupia turuturu, Devil's Tongue Weed

Devil’s tongue weed grows in sheltered areas including harbours and bays, attached to pontoons, harbour walls, shells and stones. It occurs on the lower shore in pools, and subtidally to 7m.  Due to its tolerance of low salinities it may be found in estuarine areas as well as fully marine waters.

Overview table

Environment: Marine
Species status: Non-Native
Native range: Eastern Asia
Functional type: Algae (macroalgae)
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: Southsea
Date of first record: 1973

Distribution map

GB Distribution from NBN Atlas

Author's name:

Natalie Sweet

Last updated:

October 2nd 2019

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