Description: Very rare. Thallus forming small spots up to 1 mm in diameter. At the periphery monostromatic branches radiate out. In the centre the cells form small erect unbranched, occasionally branched, filaments of 7 to 12 cells closely packed in a turf-like manner.

Habitat: Epilithic in upper littoral associated with Petalinia Rivularia and Phymatolithon lenormandii.

Distribution: England, Wales and Scotland. Europe: Mediterranean.

Similar Species: There are a number of similar species growing as epiphytes or epilithic - all very small and difficult to identify. Microscopic examination is required.

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

iNaturalist: Myrionema liechtensternii at iNaturalist World Species Observations database.

WoRMS: Myrionema liechtensternii at World Register of Marine Species. Accepted name: Myrionema liechtensternii Hauck, 1877. AphiaID: 144982.

Classification: Biota; Chromista; Harosa; Heterokonta; Ochrophyta; Phaeophyceae; Fucophycidae; Ectocarpales; Chordariaceae; Myrionema