Polysiphonia simulans is a small marine alga in the division Rhodophyta.
Description This small alga is no more than 8 cm long. It appears as a tuft of irregularly branched erect axes. The branches show 10 periaxial cells forming a collar around a central axis without cortication. The pericentral cells are all of the same length. Rhizoids are attached to the lower periaxial cells.Maggs, C.A. and Hommersand, M.H. 1993. Seaweeds of the British Isles Volume 1 Rhodophyta Part 3A Ceramiales. The Natural History Museum.
Reproduction Tetraspores have been recorded in the final branches.
Distribution Recorded from the south coast of England, Ireland and the Channel Islands. Also recorded from north-west France.Morton, O. 2003. The marine macroalgae of County Donegal, Ireland. Bulletin of Irish biogeographical Society no.27 3 - 164. Occurs southwards to Morocco.Hardy, F.G. and Guiry, M.D.2003. A Check-list and Atlas of the Seaweeds of Britain and Ireland. The British Phycological Society
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