image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae
(Charophyceae: Zygnematales: Desmidiaceae)

Closterium
Nitzsch ex Ralfs 1848

Family: Unicells or cells loosely attached forming hyphae; cell body varied in shape, a constriction at the center in most species; cell walls consisting of two or more parts, with small pores and various ornaments (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Cell body crescent in shape (long, curved, tapered at both ends); cross section rounded; cell wall smooth or with longitudinal lines, bands on the cell wall in some species; chloroplast laminae ridged and radially arranged, which makes cross section star-shaped; pyrenoids aligned or scattered (Illustrations of The Japanese Fresh-water Algae, 1977).
T=terminal; Tv=terminal vacuole
Google Image Search
Subgenus: Holopenium (Cell body straight; cell wall smooth)
Closterium libellula
C. libellula or
C. closterioides
22 samples
100-244 μm
L/W=4.2-6.4
1998-2008
Closterium libellula
C. libellula or
C. closterioides
22 samples
100-244 μm
L/W=4.2-6.4
1998-2008
Closterium
C. navicula
8 samples
33-88 μm
L/W=3.0-5.2
2003-2007
Closterium
C. rectimarginatum ?
5 samples
106-218 μm
L/W=6.3-11.0
1998-2008

Subgenus: Euclosterium (Cell body curved)
Cell wall smooth (or finely striated)
Cell body slightly curved
Closterium
C. aciculare
13 samples
125-520 μm
L/W=38-74
199?-2007
Closterium
C. gracile
36 samples
64-320 μm
L/W=17-44
1997-2008
Closterium
C. macilentum
12 samples
255-600 x μm
L/W=11-32
2004-2008
Closterium
C. acutum
v. acutum
2 samples
110-130 μm
L/W=23-33
1998-2004
Closterium pronum
C. pronum
34 samples
99-590 μm
L/W=33-50
1998-2007
Closterium idiosporum
C. idiosporum
24 samples
115-328 μm
L/W=22-37
1998-2007
Closterium
C. strigosum
6 samples
80-207 x 6-12 μm
L/W=13-17
2004-2007
Closterium
C. praelongum
23 samples
210-695 μm
L/W=17-43
1997-2008
Closterium toxon
C. toxon
13 samples
107-324 μm
L/W=15-22
1998-2008
Closterium
C. cornu
11 samples
135-225 μm
L/W=13-19
2000-2006
Closterium littorale
C. littorale
290 x 27 μm
L/W=10.7
Yamaguchi Univ.
Yamaguchi, 2004
Closterium sinense
C. sinense
130-50 x 14 μm
L/W=9.3-10.7
Higashi-Urawa
Saitama, 2001
Closterium
C. lunula
22 samples
300-874 μm
L/W=5.0-9.8
1998-2008
Closterium
C. pseudolunula ?
260 x 50 μm
L/W=5.2
Kami-takayanagi
Kisai town
Saitama, 2003
Closterium
C. lanceolatum
6 samples
230-568 μm
L/W=4.7-5.3
1999-2007
Closterium
Closterium sp.
C. lanceolatum ?
143 μm
within gel sheath
Narita
Chiba, 2000
Closterium abruptum
C. abruptum
36 samples
155-258 μm
bands present
2003-2008
Closterium
C. tumidum
100 x 17 μm
L/W=5.9
ends truncated
Kasuga
Fukuoka, 2001
Closterium pusillum
C. pusillum ?
30-46 x 7 μm
L/W=4.3-6.6
Ikenokochi marsh
Tsuruga
Fukui, 2004
Closterium
Closterium sp.9
295 μm
L/W=18
Japan, 199?
Cell body strongly (or moderately) curved
Closterium ehrenbergii
C. ehrenbergii
30 samples
209-650 μm
L/W=4.5-9.5
pyrenoids scattered
1999-2008
Closterium
Closterium sp.
C. ehrenbergii ?
1040, 980 x 96 μm
Aquatic botanical g.
Sawara
Chiba, 2004
Closterium
C. moniliferum
62 samples
155-380 μm
L/W=4.7-9.0
199?-2008
Closterium
C. moniliferum ?
230-255 x 50-55 μm
L/W=
Ichino-kawa
Namegawa
Saitama, 2004
Closterium leibleinii
C. leibleinii
13 samples
138-275 μm
L/W=6.5-12.5
1998-2007
Closterium
C. venus
8 samples
70-112 μm
L/W=6.5-10
2003-2006
Closterium
C. acutum
v. variabile
8 samples
112 μm
L/W=30-38
1998-2005
Closterium cynthia
C. cynthia
27 samples
67-160 μm
L/W=7.8-13.2
199?-2008
Small pores present at both termini
Closterium
C. dianae
71 samples
100-460 μm
L/W=7-16
1998-2007
Closterium
C. dianae
71 samples
100-460 μm
L/W=7-16
1998-2007
Closterium
C. dianae
71 samples
100-460 μm
L/W=7-16
1998-2007
Closterium calosporum
C. calosporum
4 samples
108-156 μm
2003-2005
Closterium
C. parvulum
6 samples
v. angustum
120-140 μm
1998-2007
Closterium
C. subulatum
3 samples
235-270 μm
L/W=11-18
2004-2007
Cell wall dotted; cell body slightly curved
Closterium
C. praelongum
v. porosum
420 μm
L/W=18
USA, 1999
Closterium baillyanum
C. baillyanum
25 samples
388-568 x 42-50 μm
L/W=7.8-11.4
2004-2008
Cell wall striated
Cell body slightly curved
Closterium ulna
C. ulna
16 samples
112-396 x μm
L/W=14-25
2003-2008
Closterium angustatum
C. angustatum
9 samples
374-600 μm
L/W=15.6-21.4
2003-2008
Closterium
C. acerosum
89 samples
205-892 μm
L/W=5-26
1998-2008
Closterium
Closterium sp.
248 x 38 μm
335 x 34 μm
L/W=6.5, 9.9
near City Hall
Fujimi
Saitama, 2004
Closterium
C. turgidum
7 samples
562-785 μm
L/W=13-17
1998-2008
Closterium
C. lineatum
4 samples
292,3 x 21 μm
L/W=21-25
1999-2007
Closterium intermedium
C. intermedium
54 samples
214-500 μm
L/W=
2001-2008
Closterium striolatum
C. striolatum
24 samples ?
198-494 μm
L/W=8.5-13.4
2000-2008
Closterium
C. rostratum
47 samples
180-572 μm
L/W=9.2-21
1999-2008
Closterium
C. archerianum
2 samples
strongly curved
280-324 μm
L/W=11-13
2005-2006
Closterium
C. archerianum ?
210 x 15 μm
L/W=14.0
Kumakubo
Nasu-shiobara
Tochigi, 2005
Closterium ralfsii
C. ralfsii
37 samples
center swelled
pores at ends
215-600 μm
2001-2008
Closterium
C. kuetzingii
34 samples
160-560 μm
L/W=13-24
1999-2008
Closterium
C. setaceum
18 samples
295-610 μm
L/W=24-38
1998-2008
Closterium
C. nematodes
v. proboscideum
7 samples
262-400 μm
2004-2008
Closterium
C. macilentum
v. japonicum
12 samples
255-600 x μm
L/W=11-32
2004-2008
Closterium
C. wallichii ?
x 44 μm
Iyari marsh 3
Omachi
Nagano, 2008
Cell body strongly (or moderately) curved
Closterium costatum
C. costatum
8 samples
190-660 x 27-63 μm
L/W=8.9-11.5
Myoko highland
1999-2008


Please click on species name for more images.
Copyright Protist Information Server