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Gamophyceae: Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)

 Spirotaenia condensata
Brébisson ex Ralfs 1848

Spirotaenia condensata Genus: Cell body cylindroid or spindle in shape; spiral ribbon-like chloroplasts or laminae of the chloroplast arranged spirally around central rod (Illustrations of The Japanese Fresh-water Algae, 1977).
Species : Vegetative cells large, cigar-shaped, 60-334 μm long, 10-30.4 μm diam., spiral band-form chloroplasts (Illustrations of The Japanese Fresh-water Algae, 1977).

Spirotaenia condensata Brébisson, cell body 218 μm long, 24 μm wide, L/W=9.1, x 640, wetland at Ichinose-enchi, Norikura highland, Azumi village, Nagano Pref., Japan, May 28, 2005 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
Spirotaenia condensata Spirotaenia condensata

Spirotaenia obscura Ralfs: Vegetative cells spindle-shaped, 40-232 μm long, 7-30 μm diam., chloroplasts with many pyrenoids, 6-8 spiral ridges (Illustrations of The Japanese Fresh-water Algae, 1977).

* Spirotaenia condensata Brébisson: Vegetative cells large, cigar-shaped, 60-334 μm long, 10-30.4 μm diam., spiral band-form chloroplasts (Illustrations of The Japanese Fresh-water Algae, 1977).

Spirotaenia oblonga Lütkemüller: Vegetative cells small spindle-shaped, 25.5-30 μm long, 6-7 μm diam., band-form chloroplasts making 2 turns (Illustrations of The Japanese Fresh-water Algae, 1977).

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