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Gamophyceae: Zygnematales: Desmidiaceae

Docidium undulatum
Bailley

Docidium undulatum Genus: Cell body long cylindroid, with a slight constriction at the center, where a folded structure present; both ends truncated, smooth; chloroplasts consist of a central rod and irregularly arranged laminae; about 6-8 pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body elongated, 165- (176-246) -300 μm long, 9.5- (12.6) -20 μm wide, L/W=12-18; semicells slightly tapered at blunt end, laterally wavy (7-8 waves); 6-7 folds at base; cell wall dotted (Illustrations of The Japanese Fresh-water Algae, 1977).


Docidium undulatum Bailley, semicell 94 μm long, 15 μm wide, L/W=, x 640, No.5, a marsh pond at Sensho-ga-hara, near Akita-komagadake (mountain), Shizukuishi town, Iwate Pref., Japan, August 6, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Docidium undulatum Docidium undulatum

Images of collecting locality: No.5, a marsh pond at Sensho-ga-hara, near Akita-komagadake (mountain), Shizukuishi town, Iwate Pref., Japan, August 6, 2007 by Y. Tsukii


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