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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 yengar, cell body (left) 17 μm long, 13 μm wide, L/W=1.3, gelatinous sheath 23 μm long, 17 μm wide, L/W=1.4, x 640, Toyonodai park (or Seseragi park), Toyonodai, Otone town, Saitama Pref., Japan, March 4, 2006 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

Images of collecting locality: Toyonodai park (or Seseragi park), Toyonodai, Otone town, Saitama Pref., Japan, March 4, 2006 by Y. Tsukii

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