Gamophyceae:
Zygnematales: Desmidiaceae or Closteriaceae
Closterium dianae
Ehrenberg var. arcuatum (Brébisson) Rabenhorst
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).
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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
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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