| Freshwater Algae
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Census of Freshwater Algae in Australia Compiled and edited by Tim Entwisle and Lucy Nairn. |
| Cosmarium biretum Bréb. ex Ralfs Zygnematophyceae AlgaeBase* | Class Zygnematophyceae Family Desmidiaceae |
Synonyms: Cosmarium biretum var. triquetrum Bréb. AlgaeBase*
Cosmarium quadrangulatum Hantzsch AlgaeBase*
Cosmarium biretum var. minus Hansg. AlgaeBase*
Description: L 62.6–66.7um, Br 53.5–56.7 um, Isth 23.2–26.9um, L:Br 1.1–1.2. Although very similar to that in Prescott et al (1981: Pl.277, fig. 10) these algae, when observed in end view, were elliptical with a slight median swelling. In side view they were circular and slightly thickened medially giving an appearance very similar to the var. intermedia Wille. (Dingley 2001)
State distribution in Australia, based on available literature
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new record for NSW (Dingley 2001)
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