Description: Thalli erect, tubular rising from a discoid holdfast to 14 cms long and without branches or constrictions.

Habitat: Rare. Epilithic on vertical cliff faces in exposed areas.

Distribution: In the British Isles usually recorded only on the east coast of England. Atlantic coast of North America: Canada. Further afield: California, Japan and the Canary Islands.

Similar Species: Scytosiphon lomentaria, S.dotyi is shorter and without constrictions in the thallus.

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

iNaturalist: Scytosiphon dotyi at iNaturalist World Species Observations database.

WoRMS: Scytosiphon dotyi at World Register of Marine Species.