Genus: Variable in shape and in size; mostly longer than wide; strong constriction at center; semicell pyramid-shaped, apically flattened with indentation (or notch, some species lack this notch); laterally straight or wavy or indented; one chloroplast in each semicell; one pyrenoid for each chloroplast (Illustrations of The Japanese Fresh-water Algae, 1977).
Subgenus: Entomum (Apical area deeply indented or notched)
Section: Excisa (Cell surface granulated or dented; apical area with spiny projections)
Species: Cell body (32)-40 μm long, (28)-33 μm wide, isthmus 7-8 μm wide, (Illustrations of The Japanese Fresh-water Algae, 1977).
E. pulchellum ? 40 x 26 μm Uruguay, 1999 |
E. pulchellum 33 x 24 μm Kashibaru marsh 5 Karatsu Saga, 2006  |
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