Description: Very small, reputedly parasitic, growing on Palmaria palmata. Forming patches or cushions no more tham 3 mm in diameter.

Habitat: Very rare. Epiphytic on Palmaria palmata.

Distribution: Very few scattered records from: England, Ireland, Wales and the Shetlands. Europe: Atlantic coast of France, Norway, Spitzbergen and Iceland. Greenland. Atlantic coast of North America: Canada, Maine and New Hampshire.

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

iNaturalist: Rhodophysema kjellmanii at iNaturalist World Species Observations database.

WoRMS: Rhodophysema kjellmanii at World Register of Marine Species. Accepted name: Rhodophysema lundii (Edelstein) C.W.Schneider & M.J.Wynne, 2019. AphiaID: 1356591.

Classification: Biota; Plantae; Biliphyta; Rhodophyta; Eurhodophytina; Florideophyceae; Nemaliophycidae; Palmariales; Rhodophysemataceae; Rhodophysema