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

 Pteromonas multipyrenoidea
Iyengar 1981

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).
Species:

Pteromonas multipyrenoidea Iyenger 1981 (or P. cordiformis ?), cell body μm long, μm wide, x 640, Naruto town, Chiba Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea
Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea

Pteromonas multipyrenoidea, cell body μm long, μm wide, x 640, Naruto town, Chiba Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea Pteromonas multipyrenoidea

Pteromonas multipyrenoidea Lemmermann 1900 (right), cell body μm long, μm wide, x 640, Naruto town, Chiba Pref., Japan, September 2003 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Pteromonas multipyrenoidea Pteromonas multipyrenoidea

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