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

 Spondylosium sp.
Kützing

Spondylosium Genus: cell body flat, constricted at the center; semicell ellipsoidal or subtriangular, central area of the apex slightly elevated, cells connected with each other at their central area of apex forming filament.
Species:

Spondylosium sp. similar to S. pulchellum W. Archer (or Cosmarium ?), cell body 14 μm long, 11 μm wide, x 640, Kayoicho-ike (pond), Kasuya town, Fukuoka Pref., Japan, October 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Cosmarium Cosmarium Cosmarium

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