Gamophyceae: Desmidales: Desmidaceae or Peniaceae
(Charophyceae: Zygnematales: Desmidaceae)
Penium polymorphum
Perty
Species: Cell body cylindrical or ellipsoidal, tapered to both ends, 35-79 μm long,
(16-21)-36 μm wide; both ends broadly rounded; cell wall thin, brownish in color,
finely lined (15-18/10 μ)
(Illustrations of The Japanese Fresh-water Algae, 1977).
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Penium polymorphum Perty ?,
cell body 54 μm long, 23.5 μm wide, L/W=2.3,
x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Penium polymorphum Perty ?,
cell body 75 μm long, 24 μm wide, L/W=, isthmus μm wide,
x 640, Tanohara marsh, Shiga highland, Yamanouchi town, Nagano Pref., Japan, September 26, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
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