Solieria chordalis (C.Agardh) J.Agardh

English name: Solier's Red String Weed.

Description: Plants firm and cartilaginous, bright red, to 200 mm long; fronds initiallyirregularly dichotomous with with many seemingly adventitious laterals giving the thallus an irregularly pinnate appearance. Fronds narrowing at the point of attachment; cylindrical or slightly compressed.

Habitat: Grows on rocks, stones and pebbles. Generally found in wave-sheltered habitats where silt accumulates but favouring situations with some current movement

Distribution: currently unknown in Ireland; in Britain (to which it may have been introduced as it is only known since 1976), it is known from a few localities in Pembrokeshire, Cornwall, Dorset. Extending south to Morocco and the Canary Islands.

Similar species: Gracilaria gracilis and Cystoclonium purpureum.

More information and pictures: AlgaeBase.

Photographs: Newton's Cove, Weymouth, Dorset, England; intertidal © David & Carol Fenwick