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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Phacus sp.

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).

Phacus sp., similar to P. longicauda but pellicle spirally striated, cell body 45 μm long, 40 μm wide, tail 25 μm long, x 400, x 640, Kurihashi, Saitama Pref., Japan, July 2001 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus Phacus

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