Species [var. setaceum]:
Cell body quickly attenuated toward both ends (cf. C. ralfsii),
each extended part longer than spindle-shaped part at middle (cf. C. kuetzingii),
150-(252-528)-600 μm long, 6-(8.6-17) μm wide,
L/W=30-33; cell wall transparent or slightly yellowish, finely striated
(Illustrations of The Japanese Fresh-water Algae, 1977).
|
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
No.1, Azami-ike (pond), Norikura highland, Azumi, Matsumoto city, Nagano Pref., November 4, 2007 by Y. Tsukii
