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Chlorophyceae: Volvocales: Volvocaceae
Volvocida: Volvocina: Volvocidae

 Volvox aureus
Ehrenberg 1832

Volvox Species: 1000-1500 cells; with cytoplasmic connections (Kudo, 1966). Cell body ovoid in sphape, gelatinous matrix fused with each other; colony consisting of 1000-4000 cells with 1-3 thin cytoplasmic connections.

Volvox aureus Ehrenberg 1832, colony 540 μm in diam., cell body 5-8 μm in diam., x 100, x 200, x 400, x 640, rice field next to Uehara-ike (pond), Ueda city, Nagano Pref., Japan, July 6, 2006 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
Volvox Volvox Volvox Volvox
Volvox Volvox
Colony 520 μm in diam., cell body 7-9 μm in diam., x 100, x 200, x 400, x 640
Volvox Volvox Volvox Volvox
Volvox Volvox Volvox
Colony 560 μm in diam., cell body 7-8 μm in diam., x 100, x 200, x 400, x 640
Volvox Volvox Volvox
Volvox Volvox Volvox

* V. aureus Ehrenberg: 1000-1500 cells; with cytoplasmic connections (Kudo, 1966). Cell body ovoid in sphape, gelatinous matrix fused with each other; colony consisting of 1000-4000 cells with 1-3 thin cytoplasmic connections.

V. carteri: Cell body spherical in shape, gelatinous matrix clearly separated from each other; colony consisting of 500-8000 cells without cytoplasmic connections.

V. globactor Linnaeus: 5000-15,000 cells with cytoplasmic connections (Kudo, 1966). Cell body star-shaped, or amoeboid in shape, gelatinous matrix clearly separated from each other; colony consisting of 8000-17000 cells with a thick cytoplasmic connection.

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