Description: Thallus erect and terete to 20 cms. Polysiphonous and densley branched with 12 - 13 pericentral cells, ecorticate.

Habitat: Rare. Epilithic, epiphytic on coralline algae or unattached in the sublittoral to 20 m.

Distribution: Widely dispersed records in England, Scotland, Ireland and the Channel Islands occurring in quantity in certain habitats in Ireland. Europe: Mediterranean and the Atlantic coast of France. Further afield: the Canary Islands.

Similar Species: Other ecorticate species of Polysiphonia .

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

iNaturalist: Polysiphonia subulifera at iNaturalist World Species Observations database.

WoRMS: Polysiphonia subulifera at World Register of Marine Species. Accepted name: Vertebrata subulifera (C.Agardh) Kuntze, 1891. AphiaID: 652925.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Rhodymeniophycidae; Ceramiales; Rhodomelaceae; Polysiphonieae; Polysiphonia