Euglenophyceae: Euglenales
Mastigophora: Euglenida

 Euglena ehrenbergii
Klebs, 1883

Species: 170-400 μm long, 15-40 μm wide; cylindrical and flattened; posterior end rounded; plastic, often twisted; numerous small discoid chloroplasts; stigma conspicuous; flagellum about one-half the body length or less ; two paramylon (paramylum) bodies elongate, up to over 100 μm long (Kudo, 1966). One of the larger species; chloroplasts small, discoid, numerous; paramylon (paramylum) as one or two long rods, 30-100 μm long (How to know the protozoa, 1979).

Euglena ehrenbergii, cell body about 210 μm long, μm wide, chloroplasts 3-5 μm in diam., x 400, x 640, Aug. 7-13 1999, Vermont-Maine U.S.A., by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640

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