Chlamydomonadales (Volvocales): Phacotaceae
Volvocida: Chlamydomonadina: Phacotidae
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 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
94 μm; x 640
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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