Protist Movie Database

Chlorophyta: Gamophyceae

Closterium
Nitzsch

Family: Unicells or cells loosely attached to form 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).

C. acutum
2 clips
110 x 4.3 μm
L/W=23.4
Hiroshima, 1998

C. toxon
2 clips
225 μm
L/W=19
Hiroshima, 1998

C. setaceum
4 clips
295 μm
L/W=37
Japan, 1998

C. acerosum
6 clips
Asaka
Saitama, 1998

C. acerosum
or C. turgidum ?
6 clips
550 x 48 μm
Uruguay, 1999

C. lunula
7 clips
680 μm
Vermont-Maine
USA, 1999

C. ehrenbergii
6 clips
425 μm
L/W=5.4
Uruguay, 1999

C. cornu
11 clips
conjugation
175-188 x 13-14 μm
Otawara
Tochigi, 2000

C. moniliferum
stock Sak-1, axenic
2 clips
Kurome river
Asaka
Saitama, 2000

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