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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium dianae
Ehrenberg var. dianae

Closterium dianae Species [ var. dianae ]: Cell body slightly curved, tapered toward both ends, truncated with slanted edges, small pores present at outside of both termini, inner side at center slightly convex, 150-380 μm long, 15-40 μm wide, L/W = 10-12; cell wall smooth; chloroplasts with 5-8 pyrenoids in each chloroplast (Illustrations of The Japanese Fresh-water Algae, 1977).
Cell body 160-323 μm long, 20-28 μm wide, L/W=8.3-12; chloroplasts with about 6 laminae; semicells with 4-8 pyrenoids (Photomicrographs of the Freshwater Algae, vol. 6, 1987).

Closterium dianae Ehrenberg var. dianae, cell body 200 μm long, 18 μm wide, L/W=11.1, x 400, x 640, Yoshigadaira (or Yoshigataira) marsh, Shirane mountain, Kusatsu town, Gunma Pref., Japan, June 5, 2005 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
Closterium dianae Closterium dianae Closterium dianae Closterium dianae

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