Gamophyceae:
Zygnematales: Desmidiaceae
Euastrum subamoenum
Schmidle
Genus:
Variable in shape and in size; mostly longer than wide; strong constriction at center;
semicell pyramid-shaped, apically flattened with indentation (or notch, some species
lack this notch); laterally straight or wavy or indented; one chloroplast in each semicell;
one pyrenoid for each chloroplast
(Illustrations of The Japanese Fresh-water Algae, 1977).
Subgenus: Atomum (Apical area slightly depressed)
Section: Retusa (Cell body large; granulated dome(s) at the center of each semicell)
Species:
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Similar species -- >>
E. platycerum;
E. egregium;
Euastrum subamoenum Schmidle ?,
cell body 30 μm long, 23 μm wide, L/W=1.3, isthmus 7 μm wide,
x 640, Shimo-no-koike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
Shimo-no-koike (pond), Shiga highland, Yamanouchi town, Nagano Pref., Japan, June 17, 2007 by Y. Tsukii
Please click on images for viewing enlarged.
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