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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Phacus gigas
Da Cunha

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: Cell body 100-115 μm long,m, 70-80 μm wide (Ciugulea I. & Triemer R.E., A Color Atlas of Phtosyntetic Euglenoids, Michigan State University Press, 2010).


Phacus gigas Da Cunha, cell body 106 μm long, 84 μm wide, tail short and slightly curved, x 400, x 640, Uruguay, November 1999, photo by Yuuji Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus Phacus Phacus Phacus Phacus Phacus


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