 
 
Gamophyceae: 
Zygnematales: Desmidiaceae
Xanthidium armatum
(Brébisson) Rabenhorst ex Ralfs
|  Genus: 
Variable in shape; strong constriction at center; semicell ellipsoidal, polygonal, etc.; 
cell wall with simple or branching spines, most of them laterally aligned; 
4 plate-like chloroplasts in each semicell; one or more pyrenoids in each chloroplast 
(Illustrations of The Japanese Fresh-water Algae, 1977). Species:
 | 
Xanthidium armatum (Brébisson) Rabenhorst ex Ralfs , 
cell body  μm long,  μm wide, L/W=, 
x 640, No. 3, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
Xanthidium armatum (Brébisson) Rabenhorst ex Ralfs , 
cell body  μm long,  μm wide, L/W=, 
x 640, No. 3, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
 
 
Images of collecting locality: 
No. 3, Miyatoko marsh, Minami-Aizu town, Fukushima Pref., Japan, June 15, 2008 by Y. Tsukii
 
 
 
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