Description: Thallus with compressed axes to 15 cms long.

Habitat: Very rare. Epilithic or epiphytic in shallow sublittoral.

Distribution: South-western in the British Isles. Recorded from west of Ireland, Cornwall and Wales. Further afield: the Canary Islands.

Distribution Map from NBN: Osmundea truncata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Osmundea truncata at iNaturalist World Species Observations database.

WoRMS: Osmundea truncata at World Register of Marine Species. Accepted name: Osmundea truncata (Kützing) K.W.Nam & Maggs, 1994. AphiaID: 156279.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Ceramiales; Rhodomelaceae; Laurencieae; Osmundea