Description: Main axis with transverse and longitudinal divisions ending with a large apical cell. Tufted and small, erect to 2.5 cms high with opposite or irregular branching.

Habitat: Rather rare, in sandy pools in the littoral.

Distribution: Mainly on the south-western shores of the British Isles. Europe: Norway. Atlantic coast of North America: Canada, Maine and New Hampshire. Pacific from Alaska to California.

Similar Species: Most species of Sphacelaria, and other small branched brown algae, are very alike and require microscopic examination for identification.

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

iNaturalist: Sphacelaria racemosa at iNaturalist World Species Observations database.

WoRMS: Sphacelaria racemosa at World Register of Marine Species. Accepted name: Battersia racemosa (Greville) Draisma, Prud'homme & H.Kawai, 2010. AphiaID: 624206.

Classification: Biota; Chromista; Harosa; Heterokonta; Ochrophyta; Phaeophyceae; Dictyotophycidae; Sphacelariales; Sphacelariaceae; Sphacelaria