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Euglenophyceae: Euglenales
Mastigophora: Euglenida

Euglena gigas
Drezepolski
= Euglena oxyuris f. maior (Woronichin) Popowa 1966
= Euglena helicoidea (Bernard) Lemmermann 1910
= Lepocinclis helicoideus (Ciugulea I. & Triemer R.E., A Color Atlas of Phtosynthetic Euglenoids, Michigan State University Press, 2010)

Species: 198-360 μm long, 20-40 μm wide; long cylindrical, somewhat flattened and slightly-twisted; anterior end rounded, posterior end pointed; numerous discoid chloroplasts; many rod-shaped paramylon (paramylum) bodies; no pyrenoids; nucleus big, cylindrical, lying in the center; stigma large (Zakrys, 1986).
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Euglena
E. gigas
390 x 35, 360 x 40 μ
380 x 38, 370 x 50 μ
striae/10μ
stigma 10-12 μm φ
chlo. 4 μm φ
Vermont-Maine
USA, 1999
Euglena gigas
E. gigas
370 x 40 μm
11-12 striae/10μ
stigma 12 x 6 μm
chlo. μm φ
Mihashi Park
Saitama, 2002
Euglena gigas
E. gigas
360 x 33 μm
8-9 striae/10μ
stigma 12 x 6 μm
chlo. 7 x 5 μm
Tsuchiura
Ibaraki, 2002
Euglena gigas
E. gigas
340 x 35 μm
striae/10μ
stigma μm
chlo. μm φ
Kodama
Saitama, 2003
Euglena
E. gigas
330 x 35 μm
striae/10μ
stigma 12 x 6 μm
chlo. 4-5 μm φ
Kurihashi
Saitama, 2001
Euglena gigas
E. gigas
μm
striae/10μ
O-ike park
Yabuki
Fukushima, 2003
Euglena gigas
E. gigas
410-420 x 36 μm
striae/10μ
Ishii
Sakado
Saitama, 2004
Euglena gigas
E. gigas
360 x 48 μm
striae/10μ
Futayo-no-ike
Haguro mountain
Yamagata, 2005
Euglena gigas
E. gigas
360 x 38 μm
striae/10μ
Suijo Park
Gyoda
Saitama, 2006
Euglena gigas
E. gigas
μm
striae/10μ
Nogyo Fureai p.
Toride
Ibaraki, 2008

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Euglena gigas
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