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Gamophyceae: Desmidales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)

 Micrasterias thomasiana
Archer var. thomasiana

Micrasterias thomasiana Genus: Cell body flat, large, variable in shape, longer than wide; strong constriction at center; each semicell with several notches; cell wall with many short spines (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Micrasterias thomasiana Archer var. thomasiana, cell body 223 μm long, 190 μm wide, L/W=1.2, isthmus 28 μm wide, x 400, x 640, Yacho-no-mori marsh (near road sign No. 4), Sukawa highland, Kurikoma mountain, Higashi-naruse village, Akita Pref., Japan, July 24, 2005 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Micrasterias thomasiana Micrasterias thomasiana Micrasterias thomasiana Micrasterias thomasiana Micrasterias thomasiana

Micrasterias thomasiana

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