Gamophyceae:
Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)
Spirotaenia condensata
Brébisson ex Ralfs 1848
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).
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Spirotaenia condensata Brébisson,
cell body 95 μm long, 20 μm wide, L/W=4.8,
x 640, Ukishima marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cell body 125 μm long, 22 μm wide, L/W=5.7, x 640
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).
Please click on images for viewing enlarged.
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