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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Phacus stokesii
Lemmermann var. minor Conrad

Phacus stokesii 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: Cell body broad ovoidal or nearly circular, broad longitudinal furrow present, 13-20 (-23) μm long, 12-15 μm wide; anterior broadly rounded, posterior slightly pointed; pellicle with longitudinal striae; 1-2 paramylon bodies disc-shaped (Photomicrographs of the Freshwater Algae, 1995).


Phacus stokesii Lemmermann var. minor Conrad, cell body 19 μm long, 9 μm wide, x 640, standing water on road, Akao, Sakado city, Saitama Pref., Japan, July 18, 2004 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus stokesii


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