Chlorophyceae:
Chlorococcales: Chlorococcaceae (Oocystaceae)
Tetraedron caudatum
(Corda) Hansgirg var. incisum Lagerheim
Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal,
ellipsoidal or spindle-shaped; zygospores formed outside of mother cells
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species [ var. incisum ]:
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Similar genus -->>
Tetraedriella (Xanthophyceae);
Goniochloris (Xanthophyceae);
Tetraedron caudatum (Corda) Hansgirg var. incisum Lagerheim,
cell body μm long, μm wide,
x 640, Akigase Park, Saitama city, Saitama Pref., Japan, March 2002 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Tetraedron caudatum (Corda) Hansgirg var. caudatum:
Unicells, planktonic; cell body flat, pentagonal in shape, 6-23 μm in diam.;
four sides concave, remaining one deeply incised, sometimes narrowly V- or U-shaped;
each corner rounded with a single, straight spine, 3-4 μm long
(Photomicrographs of the Freshwater Algae, vol. 6, 1987).
Tetraedron caudatum (Corda) Hansgirg var. longispinum Lemmermann:
* Tetraedron caudatum (Corda) Hansgirg var. incisum Lagerheim:
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