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Euglenophyceae: Euglenales
Mastigophora: Euglenida

 Phacus undulatus
(Skvortzow) Pochmann f. undulatus

Phacus Genus: Highly flattened; pellicle firm; body form constant (Kudo, 1966). Chloroplasts small, discoid, pyrenoids usually absent; most species flat and leaf-shaped; often with ridges or fins running helically or longitudinally (Illustrated Guide, 1985).
Species:

Phacus undulatus (Skvortzow) Pochmann f. undulatus, cell body 43 μm long (including tail region), 29 μm wide, x 640, a pond near Asami-numa (Azami-numa), Iwajuku, Kasakake town, Gunma Pref., Japan, October 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus undulatus Phacus undulatus

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