Dudresnaya verticillata (Withering) Le Jolis
Description: Gelatinous, bushy, crimson fronds, to 250 mm
long. Central axis polysiphonous, much branched, clothed with
close-set whorls of short, repeatedly dichotomously branched
monosiphonous ramui, 3-4 mm wide.
Habitat: On rocks, low intertidal (very rarely) and
subtidal, often on maërl. Widely distributed; a rare,
sporadic summer annual.
Similar species:
Schmizia hiscockiana.
Link:
Algaebase
Picture © M.D. Guiry
Picture © Bernard Picton, Ulster Museum
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