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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium dianae
var. minus (Wille) Schröder

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).
[var. minus]: Cell body 140-150 μm long, 15 μm wide; (Illustrations of The Japanese Fresh-water Algae, 1977).


Closterium dianae Ehrenberg var. minus (Wille) Schröder ?, cell body 138 μm long, 13 μm wide, L/W=10.6, x 640, Yacho-no-mori marsh (near road sign No. 4), Sukawa highland, Kurikoma mountain, Higashi-naruse village, Akita Pref., Japan, July 24, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Closterium dianae Closterium dianae
Cell body 125 μm long, 12 μm wide, L/W=10.4, x 640
Closterium dianae Closterium dianae
Cell body 125 μm long, 12.5 μm wide, L/W=10.0, x 640
Closterium dianae Closterium dianae


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