Gamophyceae:
Zygnematales: Desmidiaceae or Closteriaceae
Closterium abruptum
W. West
Species: Cell body 100-(193-310) μm long, 11-22 μm wide, L/W=9-17;
inner side nearly straight, both termini broadly blunted; cell wall smooth, transparent or yellowish in color,
bands present; chloroplasts with 4-6 pyrenoids
(Illustrations of The Japanese Fresh-water Algae, 1977).
160-280 μm long, 10-20 μm wide, L/W=18-19;
slightly curved, gradually attenuated toward both ends with obliquely truncated edges; chloroplasts with 4-9 pyrenoids
(Photomicrographs of the Freshwater Algae, vol.1, 1984).
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Closterium abruptum W. West var. abruptum ?,
cell body 260 μm long, 18 μm wide, L/W=14.4,
x 400, x 640, Nakatashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, June 29, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cell body 230 μm long, 22 μm wide, L/W=10.5, x 640
Closterium abruptum W. West var. abruptum ?,
cell body 260 μm long, 17 μm wide, L/W=15.3,
x 400, x 640, Nakatashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, June 29, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Nakatashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, June 29, 2006 by Y. Tsukii
Please click on images for viewing enlarged.
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