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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium portianum
var. nephroideum Wittrock

Cosmarium portianum Section [ Ornatae ]: Semicells circular, ellipsoid, reniform; cell surface granulated or spiny (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:


Cosmarium portianum var. nephroideum Wittrock ?, cell body 26 μm long, 21 μm wide, L/W=1.2, isthmus μm wide, x 640, No.1, Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium portianum Cosmarium portianum

Images of collecting locality: Water reservoir, near Teruoka pasture, Nabekura highland, Iiyama city, Nagano Pref., October 19, 2008, by Y. Tsukii


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