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Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum sublobatum
Brébisson var. sublobatum

Euastrum sublobatum 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: Simplicia (Cell body small; cell surface smooth)
Species:

Euastrum sublobatum Brébisson var. sublobatum (or E. binale (Greville) Ralfs var. hians W. West ?), cell body 27 μm long, 19 μm wide, L/W=1.4, isthmus 7 μm wide, x 640, Tanohara Natural Park, Ontake highland, Otaki town, Nagano Pref., Japan, June 26, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum sublobatum
Cell body 25 μm long, 20 μm wide, L/W=1.3, isthmus 6 μm wide, x 640
Euastrum sublobatum Euastrum sublobatum

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