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Desmodesmus protuberans (?)

Very similiar to Scenedesmus armatus but larger overall. Spines are usually present on terminal cells and sometimes on the medial cells, or completely missing. The cell walls may have ridges or warts or a net design. Generally not well-defined without SEM. Very common across America particularly in ponds and lakes. Frequently mis-identified as Scenedesmus armatus. This sample collected from Back River, Baltimore, Maryland in August 2004, a particularly fresh year in terms of rainfall and its impact on salinity. See Wehr and Sheath in Taxonomic References.

Chlorophyceae