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Chlorophyceae: Chlamydomonadales (Volvocales): Chlamydomonadaceae
Volvocida: Chlamydomonadina: Chlamydomonadidae

Polytoma tetraolare
Pascher, 1927

Polytoma Genus: Similar to Chlamydomonas, but lacks chloroplasts; leucoplasts present instead; two equal-length flagella, usually with many starch granules; pyrenoid absent; stigma present or absent; 2 or 4 contractile vacuoles anteriorly located; asexual reproduction by zoospores; sexual reproduction iso- or anisogamous (Illustrated Guide, 2000).
Species: Cell body nearlly spherical; 8-17 μm in diam.; papillae absent; 4 contractile vacuoles anteriorly located (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).


Polytoma tetraolare, cell body μm long, μm wide, x 640, Kita-simo-zuna, Yoshimi town, Saitama Pref., Japan, April 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare

Polytoma tetraolare, cell body μm long, μm wide, x 640, Kita-simo-zuna, Yoshimi town, Saitama Pref., Japan, April 2003 by Y. Tsukii
Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare Polytoma tetraolare


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