Odonthalia dentata (Linnaeus) Lyngbye
Description: Cartilaginous, strongly compressed,
two-edged, deep purplish-red fronds, much branched, to 300 mm
long, from hard, conical disc. Branching distichous, irregularly
pinnate, branches deeply pinnatifid, segments with large,
alternate teeth distally. Midrib visible only near base. Large
elongated internal cells surrounded by small, irregular,
coloured cells.
Habitat: On rocks, lower intertidal pools and subtidal,
perennial, a northern species abundant in Scotland, north of
England, north and west Ireland south to Achill Island, but
uncommon in Donegal, Leitrim, and Sligo.
Link:
Algaebase
Species list
Murlough Bay, Co. Antrim, Northern Ireland. 30 August 2005.
Picture © Bernard Picton, Ulster Museum.
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