Chlorophyceae: Chlamydomonadales (Volvocales): Chlamydomonadaceae
Chlamydophyceae: Chlamydomonadales: Haematococcaceae
Volvocida: Chlamydomonadina: Chlamydomonadidae
Chlorogonium elongatum
(Dangeard) Francé 1897 (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000)
(Dangeard) Dangeard 1899 (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983)
Species:
Cell body fusiform or elongated ovoid, 20-53 μm long, tapered at both ends, cell wall thin,
chloroplasts plate-like, with two large pyrenoids one located at anterior half and another at posterior half,
stigma ovoid or pear-shaped, located at anterior 1/4-1/3 of the cell body, many contractile vacuoles
(An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
Cell body fusiform to spindle-shaped, 20-80(-120) μm long, 4-10(-12) μm wide;
stigma longitudinally elongated elliptical, located close to tapering anterior end;
[var. truncatum Skuja 1956]: 20-35 μm long, 3-5 μm wide;
[var. opulentum Ettl 1960]: 120-155 μm long, 10-12 μm wide;
[var. gigas Hortobagyi 1979]: 100-110 μm long, 15-17 μm wide;
(Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).
Cell body spindle-shaped, 23-50 μm long, 4-9 μm wide
(Illustrations of The Japanese Fresh-water Algae, 1977).
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Chlorogonium elongatum (or similar species),
cell body spindle-shaped, 38 μm long, 10 μm wide,
anterior end truncated, flagella about 14 μm long, stigma anterior,
at least four pyrenoids present, a nucleus central-lateral,
x 640, rice field, Shimo-muneoka, Shiki city, Saitama Pref., Japan, October 24, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Chlorogonium elongatum, axenic culture with KCM & Hyponex,
cell body 39 μm long, 9 μm wide,
x 640, rice field, Shimo-muneoka, Shiki city, Saitama Pref., Japan, October 24, 2004 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cell body 45 μm long, 9 μm wide, flagella about 22 μm long, x 640
Cell body 30 μm long, 4 μm wide, flagella about 16 μm long, x 640
Cell body 32-35 μm long, 10-11 μm wide, flagella about μm long, x 640
Cell body 34 μm long, 7 μm wide, flagella about μm long, x 640
Cell body 37 μm long, 8 μm wide, flagella about μm long, x 640
Cell body flattened by pressing with coverglass, x 640
Abnormal cell, x 640
Please click on images for viewing enlarged.
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