image_list image_listE

Euglenophyceae: Euglenales
Mastigophora: Euglenida

 Phacus torta
(Lemmermann) Skvortzow var. tortuosa Skvortzow
or Phacus helikoides Pochmann

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: 80-100 μm; similar to P. longicauda; twisted 40-60 degree (How to know the protozoa, 1979).
Var. tortuosa: twisted about 90 degree.

Phacus torta var. tortuosa, cell body 125 μm long (including tail, 40 μm long), 52 μm wide, L/W=2.4, x 400, x 640, No.1, Iyari marsh, Omachi city, Nagano Pref., Japan, June 4, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus torta Phacus torta Phacus torta Phacus torta

Phacus torta var. tortuosa, cell body 120 μm long (including tail), 50 μm wide, L/W=2.4, x 400, x 640, No.1, Iyari marsh, Omachi city, Nagano Pref., Japan, June 4, 2007 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Phacus torta Phacus torta Phacus torta Phacus torta

Images of collecting locality: No.1, Karakemi marsh, Yasaka, Omachi city (formerly Yasaka village), Nagano Pref., Japan, June 4, 2007 by Y. Tsukii

Please click on images for viewing enlarged.
Copyright Protist Information Server