Species: 20-35 μm long,
5-10 μm wide; spindle-form with bluntly pointed
anterior and sharply attenuated posterior end; a few chloroplasts (Kudo, 1966).
2 leaf-like chloroplasts (Illustrations of The Japanese Fresh-water Algae, 1977).
Cell body fusiform, 21-32 μm long, 8-11 μm wide;
anterior rounded, posterior bluntly pointed or rounded; 2-3 chloroplasts large, saucer-shaped with
slightly lobed margins, 15-24 μm in diam., each containing a pyrenoid covered on both sides
by a watchglass-shaped sheath of paramylon; nucleus 6 μm in diam. located posterior;
flagellum 1-1.5 body length; stigma (eyespot) 3-4 μm long;
muciferous bodies small, spherical; paramylon granules small, oval or elliptiocal
(Phtomicrog. Fresh-w. Alg. 9: 37, 1989).
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31 μm
