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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium intermedium
Ralfs

Species [var. intermedium]: Cell body slightly curved, central region not swelled (inner side slightly concave), both ends broadly truncated with slanted edges, 76-(200-300)-470 μm long, 14-(17-22)-25 μm wide (cf. C. striolatum > 25 μm), L/W=6-15; cell wall brownish in color, with bands and lined (6-10 lines within 10 μm)
[var. hibernicum]: Cell body straight at central region, 200-(350)-384 μm long, 14-(26) μm wide, L/W=; (Illustrations of The Japanese Fresh-water Algae, 1977).
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Var. intermedium: Cell body slightly curved
Closterium intermedium
v. intermedium
406 x 37 μm
L/W=11.0
Oh-Yachi 5
Komado marsh
Fukushima, 2007
Closterium intermedium
v. intermedium
250 x 25 μm
L/W=10.0
Miyatoko m.3
Minami-Aizu
Fukushima, 2008
Closterium intermedium
v. intermedium
414 x 33 μm
L/W=12.5
Igashira park
Mooka
Tochigi, 2006
Closterium
v. intermedium
340 x 29 μm
L/W=11.7
Ikei-no-ike
Nasu
Tochigi, 2006
Closterium intermedium
v. intermedium
305 x 26 μm
L/W=11.7
Kareki-numa m.
Nikko
Tochigi, 2008
Closterium intermedium
v. intermedium
260 x 22 μm
L/W=11.8
Omine-numa
Tsukiyono
Gunma, 2003
Closterium intermedium
v. intermedium
260,275 x 23 μm
L/W=11.8
Omine-numa
Tsukiyono
Gunma, 2006
Closterium intermedium
v. intermedium
255,310 x 19,22 μm
L/W=13.4,14.1
Omine-numa 6
Tsukiyono
Gunma, 2007
Closterium intermedium
v. intermedium
300,305 x 24,22 μm
L/W=12.5-14
near Omine-numa
Tsukiyono
Gunma, 2006
Closterium intermedium
v. intermedium
250 x 23 μm
L/W=10.9
Michi-no-eki
Tsukiyono
Gunma, 2003
Closterium intermedium
v. intermedium ?
μm
L/W=
Yokotashiro 3
Katashina
Gunma, 2007
Closterium
v. intermedium ?
220 x 25 μm
L/W=8.8
Kashibaru m.
Karatsu
Saga, 2008
Closterium intermedium
v. intermedium
450 x 34 μm
L/W=13.2
Ichinose-enchi
Norikura highland
Nagano, 2005
Closterium intermedium
v. intermedium
280 x 23 μm
L/W=12.2
Ichinose-enchi
Norikura highland
Nagano, 2006
Closterium intermedium
v. intermedium
330 x 24 μm
L/W=
Ichinose-enchi
Norikura highland
Nagano, 2006
Closterium
v. intermedium
296 x 23 μm
L/W=12.9
Maimeno-ike
Norikura highland
Nagano, 2006
Closterium
v. intermedium
255 x 24 μm
L/W=10.6
near Oyomi marsh
Hakuba
Nagano, 2004
Closterium intermedium
v. intermedium
364 x 33 μm
L/W=11.0
Oyomi marsh
Hakuba
Nagano, 2006
Closterium intermedium
v. intermedium
270 x 21 μm
L/W=12.9
Hasu-ike
Shiga highland
Nagano, 2005
Closterium intermedium
v. intermedium
286 x 25 μm
L/W=11.4
Nozomiko 2
Iiyama
Nagano, 2007
Closterium intermedium
v. intermedium
430 x 34 μm
L/W=
Okahotto-Yatsu
Abiko
Chiba, 2008
Closterium intermedium
v. intermedium
μm
L/W=
near Dojo-ike
Norikura highland
Nagano, 2007
Closterium intermedium
v. intermedium
or C. striolatum ?
290 x 27 μm
L/W=10.7
Dojo-ike
Norikura highland
Nagano, 2007
Closterium intermedium
v. intermedium
265 x 24 μm
L/W=11.0
Kodanuki marsh
Fujinomiya
Shizuoka, 2005
Closterium intermedium
v. intermedium ?
280 x 20 μm
L/W=14.0
Kodanuki marsh
Fujinomiya
Shizuoka, 2005
Closterium intermedium
v. intermedium ?
x 22 μm
L/W=
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
Var. hibernicum: Cell body straight at central region
Closterium intermedium
v. hibernicum ?
275 x 25 μm
L/W=
Kejo-numa
Furukawa
Miyagi, 2004
Closterium intermedium
v. hibernicum
382 x 35 μm
L/W=10.9
Iroha-numa
Zao mountain
Yamagata, 2006
Closterium intermedium
v. hibernicum
μm
L/W=
near Aspite Line
Hachimantai
Akita, 2007
Closterium
v. hibernicum
360 x 31 μm
L/W=11.6
Jodo-daira
Azuma mountain
Fukushima, 2006
Closterium intermedium
v. hibernicum
363 x 24 μm
400 x 32 μm
L/W=12.5, 15.1
near Akai wetland
Aizuwakamatsu
Fukushima, 2005
Closterium intermedium
v. hibernicum ?
380 x 29 μm
372 x 31 μm
L/W=12.0,13.1
Yoshigadaira m.
Shirane mountain
Gunma, 2005
Closterium intermedium
v. hibernicum
360 x 25 μm
L/W=14.4
near Omine Mt.
Minakami
Gunma, 2007
Closterium intermedium
v. hibernicum
412 x 33 μm
L/W=12.5
near R272
Minakami
Gunma, 2008
Closterium intermedium
v. hibernicum
μm
L/W=
Motoyu marsh
Nikko
Tochigi, 2008
Closterium intermedium
v. hibernicum ?
440 x 36 μm
L/W=12.2
Numappara marsh
Kuroiso
Tochigi, 2003
Closterium intermedium
C. intermedium ?
or C. juncidum ?
175 x 11 μm
L/W=
Numappara marsh
Kuroiso
Tochigi, 2003
Closterium intermedium
v. hibernicum ?
410 x 30 μm
L/W=13.7
Hazama marsh
Ashikaga
Tochigi, 2003
Closterium intermedium
v. hibernicum ?
420 x 30 μm
L/W=14.0
Hazama marsh
Ashikaga
Tochigi, 2006
Closterium
v. hibernicum
500 x 41 μm
L/W=12.2
Hakama marsh
Madarao highland
Niigata, 2006
Closterium intermedium
v. hibernicum ?
420, 364 x μm
L/W=11-11.7
Numa-no-hara marsh
Madarao highland
Niigata, 2005
Closterium intermedium
v. hibernicum
360 x 25 μm
L/W=14.4
Numa-no-hara m.
Madarao highland
Niigata, 2005
Closterium
v. hibernicum
350 x 30 μm
L/W=11.7
Numa-no-hara m.
Madarao highland
Niigata, 2006
Closterium intermedium
v. hibernicum ?
380 x 30 μm
340 x 32 μm
L/W=12.7, 10.6
Kowashimizu
Suwa
Nagano, 2005
Closterium intermedium
v. hibernicum ?
310 x 30 μm
L/W=10.3
Kowashimizu
Suwa
Nagano, 2007
Closterium
v. hibernicum
214 x 18 μm
L/W=
Tanohara marsh
Shiga highland
Nagano, 2004
Closterium intermedium
v. hibernicum
215 x 16 μm
L/W=13.4
Tanohara marsh
Shiga highland
Nagano, 2005
Closterium
v. hibernicum ?
or C. abruptum
245 x 17 μm
L/W=
Shimo-no-koike
Shiga highland
Nagano, 2004
Closterium intermedium
v. hibernicum
293 x 18 μm
L/W=16.3
Karakemi marsh
Yasaka
Nagano, 2005
Closterium intermedium
v. hibernicum
or C. abruptum ?
266 x 18 μm
275 x 17 μm
Karakemi marsh
Yasaka
Nagano, 2005
Closterium intermedium
v. hibernicum ?
275 x 25 μm
L/W=11
Imou marsh
Toyohashi
Aichi, 2006
Closterium intermedium
v. hibernicum ?
490 x 31 μm
L/W=15.8
near Yamaguchi Univ.
Yamaguchi, 2004
Closterium intermedium
v. hibernicum
512 x 35 μm
L/W=10.9
Kashibaru m.2
Karatsu
Saga, 2006
Closterium intermedium
v. hibernicum
350 x 28 μm
L/W=12.5
Kasuga
Fukuoka, 2001
Similar species -->> C. striolatum (φ > 25 μm); C. rostratum; C. lineatum;

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Closterium intermedium
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