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Diagnostic features

Filamentous rhodophyte with roughly square or rectangular cells loosely aligned in branching mucilaginous tubes. The cells are usually blue-green in colour. On close inspection the star-shaped blue-green chloroplast can be seen, with a large pyrenoid in the centre.

Typical habitats

Our records are mostly from good quality streams and rivers


Kingdom Plantae
Phylum Rhodophyta
Class Stylonematophyceae
Order Stylonematales
Family Stylonemataceae
Common name Red algae