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

Hyalotheca
Ehrenberg ex Ralfs 1848

Genus: Cell body short cylindroid in shape, slightly constricted at the center; semicells trapezoid or rectangular in shape, lateral margins smooth or slightly convex; cells firmly attached with each other forming elongate filaments; colonies sometimes covered with thick gelatinous coats (Illustrations of The Japanese Fresh-water Algae, 1977).
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H. dissiliens var. dissiliens: 14-22 μm long, 23-32 μm wide
L/W < 0.6 L/W 0.6-0.8 L/W > 0.8
Hyalotheca dissiliens
v. dissiliens
26 samples
12-22 x 24-32 μm
L/W=0.4-0.8
1999-2007
Hyalotheca dissiliens
v. dissiliens
26 samples
12-22 x 24-32 μm
L/W=0.4-0.8
1999-2007
Hyalotheca dissiliens
v. dissiliens
9 samples
17-24 x 20-28 μm
L/W=0.7-0.8
2003-2007
Hyalotheca dissiliens
v. dissiliens
7 samples
19-23 x 21-23 μm
L/W=0.8-1.0
2005-2007
H. dissiliens var. tatrica: 14-22 μm long, 14-20 μm wide
Hyalotheca
H. dissiliens
v. tatrica
16 x 16 μm
14 x 15 μm
L/W=0.9-1.0
Azami-ike
Norikura highland
Nagano, 2006
Hyalotheca dissiliens
H. dissiliens
v. tatrica
x 15 μm
L/W=
Numappara
Kuroiso
Tochigi, 2003
Hyalotheca dissiliens
H. dissiliens
v. tatrica
15-20 x 16 μm
L/W=0.9-1.3
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
Hyalotheca dissiliens
H. dissiliens
v. tatrica
15 x 21 μm
L/W=0.7
Shijuhachi-ike 2
Shiga highland
Nagano, 2007
Hyalotheca indica
H. dissiliens
v. tatrica
18 x 19 μm
L/W=0.9
Tanohara m.1
Shiga highland
Nagano, 2007
Hyalotheca dissiliens
H. dissiliens
v. tatrica
15 x 17 μm
L/W=0.9
Numappara m.
Nasu-shiobara
Tochigi, 2007
H. dissiliens var. minor: 12-14 μm long, 15-20 μm wide
Hyalotheca dissiliens
H. dissiliens
v. minor
9-14 x 17 μm
L/W=0.5-0.8
Kowashimizu
Suwa
Nagano, 2005
Hyalotheca dissiliens
H. dissiliens
v. minor
12-13 x 19-20 μm
L/W=0.63-0.65
Kowashimizu
Suwa
Nagano, 2007
Hyalotheca
H. dissiliens
v. minor
12.5 x 16 μm
L/W=0.8
Numa-no-hara m.
Madarao highland
Niigata, 2006
H. indica: 15 μm long, 14 μm wide

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Hyalotheca
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