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Gamophyceae: Zygnematales: Desmidiaceae

Cosmarium connatum
Brébisson ex Ralfs

Cosmarium Species: Cell body slightly large, (62-87)-100 μm long, (45-70)-74 μm wide, isthmus 37-53 μm wide, L/W=1.3; semicells elliptial, apex broadly rounded, slightly flattened, apical view circular or broad ellipitical; cell wall covered with small pores interspersed with many dots, (Illustrations of The Japanese Fresh-water Algae, 1977).


Cosmarium connatum (= Actinotaenium connatum) Brébisson ex Ralfs, cell body 73 μm long, 51 μm wide, isthmus 43 μm wide, x 200, x 400, x 640, a wetland near Ichinose-enchi (along super forest road), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium connatum Cosmarium connatum

Images of collecting locality: a wetland near Ichinose-enchi (along super forest road), Norikura highland, Azumi, Matsumoto city (formerly Azumi village), Nagano Pref., Japan, June 8, 2006 by Y. Tsukii


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