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Gamophyceae: Desmidales: Desmidaceae or Peniaceae
(Charophyceae: Zygnematales: Desmidaceae)

Penium margaritaceum
(Ehrenberg) Brébisson in Ralfs 1848

Penium margaritaceum Species: Cell body cylindrical, slightly depressed at center, 68-185 μm long, 14-22 μm wide; chloroplasts with longitudinal ridges; cell wall with small granules arranged longidudinally or sometimes irregularly; zygospores spherical or slightly elongated (Photomicrographs of the Fresh-water Algae, 1985).

Penium margaritaceum (Ehrenberg) Brébisson, stock Ffu-2, axenic culture (November 1 to November 24, 2001), cell body 94 μm long, 20 μm wide, x 640, Umi-no-nakamichi Seaside Park, Fukuoka city, Fukuoka Pref., Japan, October 2001 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
Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum Penium margaritaceum

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