Species: Cell body large, elongated, slightly curved, both side nearly straight at central region, 300-(448-672)-768 μm long, 13-(20-48) μm wide, L/W=14-16?; cell wall brownish, finely striated (about 12 lines within 10 μm); 9-11 pyrenoids in each semicells (Illustrations of The Japanese Fresh-water Algae, 1977).
T=terminal; Tv=terminal vacuole
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C. lineatum
292 x 14 μm
L/W=21
ends truncated
Uruguay, 1999
C. lineatum ?
293 x 12 μm
L/W=24.4
Lake Tanuki
Fujinomiya
Shizuoka, 2006
C. lineatum
190 x 9 μm
L/W=21.1
Futayo-no-ike
Haguro mountain
Yamagata, 2006
C. lineatum
340 x 24 μm
L/W=14.2
Nozomiko 2
Iiyama
Nagano, 2007