Description: Latterals never flattened in either adult or young plants. Branches radially arranged, filiform without swollen bases. Not iridescent.

Habitat: Rare. Littoral littoral rock pools.

Distribution: South-west England and Channel Islands. Europe: Canary Islands. Further afield: Salvage Islands, Canary Islands, Mauritania and Cape Verde Islands.

Similar Species: Other species of the genus particularly C. foeniculacea.

Key Identification Features:

• Not iridescent.

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

iNaturalist: Cystoseira humilis at iNaturalist World Species Observations database.

WoRMS: Cystoseira humilis at World Register of Marine Species. Accepted name: Cystoseira humilis Schousboe ex Kützing, 1860. AphiaID: 145520.

Classification: Biota; Chromista; Harosa; Heterokonta; Ochrophyta; Phaeophyceae; Fucophycidae; Fucales; Sargassaceae; Cystoseira