Description: Thallus erect to 3 cms long and about 1 cms broad, usually flattened and hollow. Branches usually once or twice pinnate, distichous and constricted at junction with main thallus. Basically oval in shape. Bright rose coloured.

Habitat: Epilithic, epiphytic or epizoic. Upper sublittoral to 20 m or more.

Distribution: Widespread around the British Isles including the Shetlands, but, being sublittoral and small, not often recorded. Europe: Portugal, Spain, Norway and Iceland. Atlantic coast of north America: Canada to Connecticut.

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

iNaturalist: Lomentaria orcadensis at iNaturalist World Species Observations database.

WoRMS: Lomentaria orcadensis at World Register of Marine Species. Accepted name: Lomentaria orcadensis (Harvey) Collins, 1937. AphiaID: 145830.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Rhodymeniales; Lomentariaceae; Lomentaria