CHROMOPHYTA : Ectocarpales : ChordariaceaeBROWN ALGAE

Sphaerotrichia divaricata (C Agardh) Kylin


Description: Fronds growing to 70 cms as tufts, branching irregularly with an axis of elongated cells, and clothed with short assimilatory filaments 2 - 6 cells long, each ending in a large globular cell. Gelatinous.

Habitat: Rare. Lower littoral rock pools.

Distribution: Widely distributed but with few scattered records around the British Isles. Europe: Baltic Sea and Norway. Atlantric coast of North America: Newfoundland. Further afield: Japan.

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

iNaturalist: Sphaerotrichia divaricata at iNaturalist World Species Observations database.

WoRMS: Sphaerotrichia divaricata at World Register of Marine Species.

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 Morton, O., Keatley, L., Morrow, C.C. & Picton, B.E. (2026). Sphaerotrichia divaricata. (C Agardh) Kylin. [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=ZR3710. Accessed on 2026-11-01