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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium dianae
Ehrenberg var. arcuatum (Brébisson) Rabenhorst

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. arcuatum] Cell body 135-300 μm long, 12-22 μm wide, L/W=9-12; (Illustrations of The Japanese Fresh-water Algae, 1977). Cell body 243-313 μm long, 17-24 μm wide, L/W=13-15; (Photomicrographs of the Freshwater Algae, vol. 9, 1989).
Similar species -- > > C. ralfsii;


Closterium dianae var. arcuatum (Brébisson) Rabenhorst, (or Closterium ralfsii var. gracilius ?), cell body 195 μm long, 16 μm wide, L/W=12.2, x 640, Ohori-ike (a pond at Ohori Park), Fukuoka city, Fukuoka Pref., Japan, October 2001 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 Closterium Closterium

Closterium sp., cell body 205 μm long, 16 μm wide, L/W=12.8, x 640, Ohori-ike (a pond at Ohori Park), Fukuoka city, Fukuoka Pref., Japan, October 2001 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 Closterium

Closterium sp., cell body 205 μm long, 19 μm wide, L/W=10.8, x 640, Ohori-ike (a pond at Ohori Park), Fukuoka city, Fukuoka Pref., Japan, October 2001 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 Closterium

Closterium sp., cell body 160 μm long, 17 μm wide, L/W=9.4, x 640, Ohori-ike (a pond at Ohori Park), Fukuoka city, Fukuoka Pref., Japan, October 2001 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 Closterium Closterium


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