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

Desmidium swartzii
Agardh

Genus: Cell body short, with a deep constriction at the center, apical view fusiform or radially symmetrical; cell apexes without spiny projections; intermediate zone or folded structure appeared during cell division; zygospores remain within their mother cells (Illustrations of The Japanese Fresh-water Algae, 1977).
Species: Cell body constricted in the middle, sinus narrow-linear part but acutely open outward, 11-22 μm long, 24-39 μm wide, L/W=2, constriction 21-28 μm wide; vertical view of cells triangular, sides straight, angles rounded; apex broad, with a short connecting process at each apical angle, excavated in the middle and forming a oblong hollow cavity between the adjacent cells; semicells transversely subrectangular, lateral margins obliquely truncate; filaments twisted (Photomicrographs of the Freshwater Algae, vol. 1, 1984).
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Desmidium swartzii
D. swartzii
v. swartzii ?
18 x 29 μm
Kejo-numa 1
Osaki
Miyagi, 2006
Desmidium swartzii
D. swartzii
v. swartzii
17 x 38 μm
Numa-no-hara m.
Madarao highland
Niigata, 2005
Desmidium swartzii
D. swartzii
v. swartzii
20 x 40 μm
near Akai wetland
Aizuwakamatsu
Fukushima, 2005
Desmidium swartzii
D. swartzii
v. swartzii
x 30 μm
Numappara marsh
Kuroiso
Tochigi, 2003
Desmidium swartzii
D. swartzii
v. swartzii
x 35 μm
Numappara marsh
Kuroiso
Tochigi, 2007
Desmidium swartzii
D. swartzii
v. swartzii
15 x 28 μm
Fujioka
Tochigi, 2001
Desmidium swartzii
D. swartzii
μm
Kareki-numa
Nikko
Tochigi, 2008
Desmidium swartzii
D. swartzii
v. swartzii ?
18 x 28 μm
Naruto-Togane
Sanmu
Chiba, 2006
Desmidium swartzii
D. swartzii
v. swartzii
14 x 28 μm
Kurihashi
Saitama, 2001
Desmidium swartzii
D. swartzii
v. swartzii
17 x 31 μm
Furuyakami
Kawagoe
Saitama, 2004
Desmidium swartzii
D. swartzii
v. swartzii
17 x 26 μm
Tachikawa
Tokyo, 2001
Desmidium swartzii
D. swartzii
v. swartzii
17 x 32 μm
Karakemi marsh
Omachi
Nagano, 2006
Desmidium
D. swartzii
v. swartzii
15 x 29 μm
near Oyomi marsh
Hakuba
Nagano, 2004
Desmidium
D. swartzii
v. swartzii ?
20 x 30 μm
Azami-ike
Norikura highland
Nagano, 2006
Desmidium swartzii
D. swartzii
v. quadrangulatum
22 x 46 μm
Senuki
Nasu
Tochigi, 2004
Desmidium
D. swartzii
v. quadrangulatum
20 x 40-55 μm
Naruto
Chiba, 2003
Desmidium swartzii
D. swartzii
v. quadrangulatum
μm
near Railway St.
Odate
Akita, 2007

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Desmidium swartzii
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