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Chlorophyceae: Chlamydomonadales (Volvocales): Phacotaceae
Volvocida: Chlamydomonadina: Phacotidae

Pteromonas angulosa
(Carter) Lemmermann, 1900

Pteromonas Genus: Unicellular; two equal-length flagella emerging from anterior end; cell body flat, broad ovoidal, lateral view spindle-shaped, within a gelatinous sheath quadrangular in shape; a single chloroplast plate-like, with 4-6 pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).

Pteromonas angulosa ?, cell body 12 μm long, 8 μm wide, x 640, Watarase river, Ashikaga city, Tochigi Pref., Japan, February 1, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Pteromonas Pteromonas

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