Description: Thallus cylindrical, polysiphonous in erect tufts to 15 cms. Branched alternate-distichously with 8 - 10 periaxial cells and corticated.

Habitat: Epiphytic, epilithic and epizoic. In rock pools of the lower littoral, rarely sublittoral.

Distribution: A south-western species of the British Isles, rare but recorded around Ireland and Orkney. Europe: Mediterranean, Portugal, Spain and France. Further afield: Morocco.

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

iNaturalist: Boergeseniella thuyoides at iNaturalist World Species Observations database.

WoRMS: Boergeseniella thuyoides at World Register of Marine Species. Accepted name: Vertebrata thuyoides (Harvey) Kuntze, 1891. AphiaID: 668195.

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