Gamophyceae: 
Desmidales: Mesotaeniaceae
(Charophyceae: Zygnematales: Mesotaeniaceae)
Netrium oblongum
(De Brary) Lütkemüller var. oblongum
 
Species [ var. oblongum ]: Cell body cylindrical ellipsoid, both ends broadly rounded; 
laminae of chloroplasts deeply dented showing circular depressions; 
108-148 μm long, 27-39 μm wide, L/W=3-4.   
 [ var. cylindricum W. et G.S. West ]:  Smaller than var. oblongum; 
60-90 μm long, 17-25 μm wide  
(Illustrations of The Japanese Fresh-water Algae, 1977). 
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Netrium oblongum (De Brary) Lütkemüller var. oblongum (or N. digitus ?), 
cell body 224 μm long, 65 μm wide, L/W=3.4, 
x 640, No. 3-2, Midagahara (bog/marsh), Tate-yama (Moutain), Tateyama town, Toyama Pref., Japan, August 23, 2006, by Y. Tsukii
 31 μm
 63 μm
 94 μm; x 640
Images of collecting locality: 
No. 3-1, Midagahara (bog/marsh), Tate-yama (Moutain), Tateyama town, Toyama Pref., Japan, August 23, 2006, by Y. Tsukii
Please click on images for viewing enlarged.
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