Gamophyceae:
Desmidales: Desmidiaceae
(Charophyceae: Zygnematales: Desmidiaceae)
Micrasterias truncata
(Corda) Brébisson var. quadrata Bulnheim
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:
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Micrasterias truncata (Corda) Brébisson var. truncata,
stock Ikus-6 (Akus-6), axenic culture (from December 29, 2005 to February 1, 2006),
cell body 102 μm long, 97 μm wide, L/W=1.1, isthmus about 20 μm wide,
x 640, Yacho-no-mori marsh (Ohnigo marsh), Sukawa highland, Kurikoma mountain, Higashi-naruse village, Akita Pref., Japan, July 24, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Daughter cells, x 400, x 640
Micrasterias truncata,
cell body 115 μm long, 108 μm wide, L/W=, isthmus 23 μm wide,
x 640, Yacho-no-mori marsh (near road sign No. 1), Sukawa highland, Kurikoma mountain, Higashi-naruse village, Akita Pref., Japan, July 24, 2005 by Y. Tsukii
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