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Gamophyceae: Zygnematales: Desmidiaceae

Tetmemorus laevis
(Kützing) Ralfs

Species [ var. laevis ]: Cell body small in size, slightly constricted at the center, (70-120)-145 μm long, 17-(18-32) μm wide, L/W=3-4; semicells tapered from the base to ends, both ends broadly rounded with a deep incision at center; cell wall roughly dotted; lateral view spindle-shaped, tapering stronger than frontal view.
[ var. tropicus ]: Larger than var. laevis, 115-(134)-153 μm long, 24-(28) μm wide, L/W=5. (Illustrations of The Japanese Fresh-water Algae, 1977).
[var. minutus]: Cell body (37-)45-60(-75) μm long, (12-)17-20 μm wide, L/W=2.8-3.5, (Coesel & Meesters 2007).
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var. laevis: Cell body (70-)80-120(-145) μm
Tetmemorus laevis
v. laevis ?
72 x 20 μm
Tashirodaira m.6
Hakkoda mt.
Aomori, 2006
Tetmemorus laevis
v. laevis ?
69-78 x 24-25 μm
Shimizu-daira
Nasu
Tochigi, 2005
var. minutus: Cell body (37-)45-60(-75) μm
Tetmemorus laevis
v. minutus
56 x 19 μm
Sukawa highland
Kurikoma mt.
Akita, 2007
Tetmemorus
v. minutus
63 x 20 μm
Gozaisho marsh
Hachimantai
Iwate, 2005
Tetmemorus
v. minutus ?
50 x 18 μm
Mida-ga-hara
Gassan (mt.)
Yamagata, 2005
Tetmemorus
v. minutus
58 x 17 μm
Mida-ga-hara 5
Gassan (mt.)
Yamagata, 2006
Tetmemorus
v. minutus
57 x 18.5 μm
Mida-ga-hara 9
Gassan (mt.)
Yamagata, 2006
Tetmemorus laevis
v. minutus
57 x 19 μm
Kisuge konuma
Shimogo
Fukushima, 2005
Tetmemorus laevis
v. minutus
60 x 29 μm
Shirakaba-Yachi
Komado marsh
Fukushima, 2007
Tetmemorus laevis
v. minutus
μm
Miyatoko m.3
Minami-Aizu
Fukushima, 2008
Tetmemorus
v. minutus
63 x 19 μm
Karakemi marsh
Yasaka
Nagano, 2005
Tetmemorus laevis
v. minutus
59 x 20 μm
Karakemi marsh
Yasaka
Nagano, 2005
Tetmemorus laevis
v. minutus
58 x 20 μm
Karakemi marsh 5
Yasaka
Nagano, 2007
Tetmemorus laevis
v. minutus
56 x 18 μm
Tanohara marsh
Shiga highland
Nagano, 2006
Tetmemorus laevis
v. minutus
58 x 18 μm
Tanohara marsh 1
Shiga highland
Nagano, 2007
Tetmemorus laevis
v. minutus
54 x 18 μm
Hasu-ike
Shiga highland
Nagano, 2005
Tetmemorus laevis
v. minutus
62 x 21 μm
Imou bog 3
Toyohashi
Aichi, 2006

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Tetmemorus laevis
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