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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, cell body 260 μm long, 22 μm wide, L/W=11.8, x 400, x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 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 Closterium dianae
Cell body 160 μm long, 10 μm wide, L/W=16.0, x 400, x 640
Closterium dianae
Cell body 145 μm long, 14 μm wide, L/W=10.4, x 400, x 640
Closterium dianae
Cell body 225 μm long, 19 μm wide, L/W=11.8, x 400, x 640
Closterium dianae Closterium dianae
Cell body 135 μm long, 11 μm wide, L/W=12.3, x 400, x 640
Closterium Closterium
Cell body 150 μm long, 10 μm wide, L/W=15.0, x 640
Closterium Closterium Closterium
Cell body 147 μm long, 13 μm wide, L/W=11.3, x 640
Closterium Closterium

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