Description: Thallus filamentous and finely branched to 15 cms or more long. Uniseriate above and more or less polysiphonous below. Branching dense and irregular, sometimes opposite or unilateral.

Habitat: Very rare. Low littoral rock pools and the shallowq sublittoral.

Distribution: Records from the British Isles few and scattered, generally westerly. Europe: France, Baltic, Norway, Spitzbergen and Iceland. Greenland. Atlantic coast of North America: Canada and Massachusetts. Further afield: Atlantic Seas from Spitzbergen, Novaya Zemlaya and the Murman Sea, Japan.

Similar Species: Tilopteris mertensii (Turner) Kutzing has opposite branching unlike Haplospora.

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

iNaturalist: Haplospora globosa at iNaturalist World Species Observations database.

WoRMS: Haplospora globosa at World Register of Marine Species. Accepted name: Haplospora globosa Kjellman, 1872. AphiaID: 145918.

Classification: Biota; Chromista; Harosa; Heterokonta; Ochrophyta; Phaeophyceae; Fucophycidae; Tilopteridales; Tilopteridaceae; Haplospora