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Cyanophyceae: Chroococcales: Chroococcaceae

Chroococcus turgidus
(Kützing) Nägeli 1849

Species [ var. turgidus ]: Unicells or colonies of 2, 4, 8 cells; cells bright blue-green, sometimes coarsely granulated, 8-32 μm in diam. (without sheath), sheaths 2-6 μm in thickness (Photomicrographs of the Freshwater Algae, vol. 3, 1985).
Colony of 2-4 cells, covered with layered gelatinous sheath; cell body 8-32 μm in diam. (excluding sheath), 13-40 μm in diam. (including sheath).
[ var. maximus ]: Cell body 22-45 μm in diam. (excluding sheath, 5-10 μm in thickness)
[ var. thermalis]: Sheath present, but not layered (Illustrations of The Japanese Fresh-water Algae, 1977).
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var. maximus: Cell body 22-45 μm (excluding seath); all cells larger than 20 μm
Chroococcus turgidus
C. turgidus
v. maximus
31 x 35 μm
Mida-ga-hara
Gassan (mt.)
Yamagata, 2005
Chroococcus
C. turgidus
v. maximus
31 x 22-49 μm
Mida-ga-hara 5
Gassan (mt.)
Yamagata, 2006
Chroococcus
C. turgidus
v. maximus
24-28 x 36-37 μm
Mida-ga-hara 10
Gassan (mt.)
Yamagata, 2006
Chroococcus
C. turgidus
v. maximus ?
30 x 23 μm
J. Skunk Cabbage m.
Tsugaike highland
Nagano, 2006
Chroococcus turgidus
C. turgidus
v. maximus ?
21 x 24 μm
Tanohara marsh
Shiga highland
Nagano, 2006
Chroococcus turgidus
C. turgidus
v. maximus ?
25 x 34 μm
Iroha-numa
Azuma mt.
Yamagata, 2007
var. turgidus: Cell body 8-32 μm (excluding sheath); containing cells smaller than 20 μm
Chroococcus turgidus
C. turgidus
v. turgidus ?
32 x 25 μm
Yumi-ike
Shirane mountain
Gunma, 2005
Chroococcus turgidus
C. turgidus
v. turgidus ?
30 x 20 μm
Hikage marsh
Shiga highland
Nagano, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
28 x 19 μm
Ushidome-ike
Norikura highland
Nagano, 2005
Chroococcus
C. turgidus
v. turgidus ?
27 μm
Tanohara marsh
Shiga highland
Nagano, 2004
Chroococcus turgidus
C. turgidus
v. turgidus
27 x 22 μm
Sukawa highland
Kurikoma mountain
Akita, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
17 x 23 μm
Sukawa highland
Kurikoma mountain
Akita, 2007
Chroococcus turgidus
C. turgidus
v. turgidus ?
21 x 29 μm
Oh-numa m.
Hachimantai
Akita, 2007
Chroococcus turgidus
C. turgidus
v. turgidus ?
28 x 21 μm
Miyatoko m.3
Minami-Aizu
Fukushima, 2008
Chroococcus turgidus
C. turgidus
v. turgidus ?
27 x 17 μm
Kenashitai
Hakkoda mountain
Aomori, 2005
Chroococcus turgidus
C. turgidus
v. turgidus ?
26 x 18 μm
Tanohara marsh
Shiga highland
Nagano, 2005
Chroococcus turgidus
C. turgidus
v. turgidus ?
25 x 20 μm
Ukishima marsh
Tsugaike highland
Nagano, 2005
Chroococcus turgidus
C. turgidus
v. turgidus ?
25 x 35 μm
Kawaguchi Natural p.
Kawaguchi
Saitama, 2005
Chroococcus turgidus
C. turgidus
v. turgidus ?
23 x 14 μm
Watasuge marsh
Tsugaike highland
Nagano, 2005
Chroococcus
C. turgidus
v. turgidus
22 μm
Shimo-no-koike
Shiga highland
Nagano, 2004
Chroococcus
C. turgidus
v. turgidus
22 μm
Japan, 1998
Chroococcus turgidus
C. turgidus
v. turgidus
22 x 15 μm
Hachiman-numa m.
Hachimantai
Iwate, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
19 x 12,15 μm
Hakama marsh
Madarao highland
Niigata, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
17 x 12 μm
Shibu-ike
Shiga highland
Nagano, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
18 x 15 μm
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
Chroococcus turgidus
C. turgidus
v. turgidus
15 x 23 μm
Shijuhachi-ike
Shiga highland
Nagano, 2006
Chroococcus turgidus
C. turgidus
v. turgidus
15 x 12 μm
12 x 9 μm
Tanohara Natural p.
Ontake highland
Nagano, 2005
Chroococcus turgidus
C. turgidus
v. turgidus
16 x 11 μm
Kenashitai
Hakkoda mountain
Aomori, 2005
Chroococcus
C. turgidus
v. turgidus
12 x 9 μm
Showa Memorial Park
Tokyo, 2001
Chroococcus turgidus
C. turgidus
v. turgidus
10-11 x 7-9 μm
Kanazawa
Ishikawa, 2002
var. thermalis: Seath lacking definite layers
Chroococcus
C. turgidus
v. thermalis
22 μm
Imou bog
Toyohashi
Aichi, 2004
Chroococcus
C. turgidus
v. thermalis
24 μm
near Imou marsh
Toyohashi
Aichi, 2004
Chroococcus
C. turgidus
v. thermalis
21 x 14 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005
Chroococcus turgidus
C. turgidus
v. thermalis
19 x 15 μm
Nagoriga-hara
Kurikoma mountain
Iwate, 2005
Chroococcus turgidus
C. turgidus
v. thermalis
18 x 11 μm
near Nan-ko
Shirakawa
Fukushima, 2003
Chroococcus turgidus
C. turgidus
v. thermalis
13 x 9 μm
Ushijima park
Kasukabe
Saitama, 2003
Chroomonas
C. turgidus ?
v. thermalis
μm
Bessho-numa
Saitama, 2001
Chroococcus turgidus
C. turgidus ?
v. thermalis
μm
Tsuchiura
Ibaraki, 2002
Chroococcus
C. turgidus ?
v. thermalis
9-10 x 8 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005
Chroococcus
C. turgidus
v. thermalis
14 x 8 μm
Izumi 741
Namegawa
Saitama, 2004

Chroococcus
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