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).
Species: 390-(430-580)-800 μm long, 4-(5-7)-8 μm wide, L/W = 73-135; cell body very long, slightly curved, tapered at both termini; cell wall transparent, lack bands (Illustrations of The Japanese Fresh-water Algae, 1977). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Closterium aciculare T. West,
cell body 380 μm long, 6 μm wide, L/W=63.3,
x 200, x 400, x 640, No.1, Saiko (Lake Sai) at Arakawa-Saiko park, Minami-ku, Saitama city, Saitama Pref., Japan, December 2, 2007 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Cell body μm long, μm wide, L/W=, x 200, x 400, x 640
Images of collecting locality:
No.1, Saiko (Lake Sai) at Arakawa-Saiko park, Minami-ku, Saitama city, Saitama Pref., Japan, December 2, 2007 by Y. Tsukii
