Genus:
Cell body long cylindroid; a slight constriction at center; cross section of the semicells spherical,
slightly swell at the center but without a folded structure as
Docidium; slightly tapered toward both ends, which are truncated and smooth or
surrounded by granules or various small structures; laterally straight or wavy, with spiny
projections in some species; 2-10 ribbon-like chloroplasts in each semicell;
with many pyrenoids; a vacuole containing active granules at both ends same as in
Closterium;
cell wall mostly dotted, but with spines or other patterns in some species
(Illustrations of The Japanese Fresh-water Algae, 1977).
Species: |
100 μm
200 μm
300 μm; x 200 :
50 μm
100 μm
150 μm; x 400
31 μm
63 μm
94 μm; x 640
Pleurotaenium nodosum,
cell body μm long, μm wide,
x 640, Inari Park, Toyama city, Toyama Pref., Japan, September 2002, by Y. Tsukii
50 μm
100 μm
150 μm; x 400
31 μm
63 μm
94 μm; x 640
