Euglena
Euglena est eucaryotum unicellulare, vulgo bestiola ocellata dicta, ad classem Euglenozorum pertinens. Adhuc magis quam mille species Euglenarum descriptae sunt.

Euglenae nonnunquam vel plantae (quia complures chloroplasta habent (per endosymbiosim) vel animalia (quia flagello se movere possunt) esse arbitrantur.

Euglenae possunt cibum sumere velut animalia (partim heterotrophice), et possunt se alere velut plantae (partim autotrophice), et sunt species quae mixotrophe se alent. Euglenae possunt circumcludere cibi particulos ad illos devorandos (per phagocytosim). Multae Euglenae habent chloroplasta (vide et plastida) et chlorophyllum a & b.

Euglenae nomen traxerunt a macula ocellari, per quam se movere possunt ad lucem versus, videre quidem non possunt.

Euglenae praesertim aquam dulcem, at etiam aquam salsam et tellurem inhabitant. Vacuola eis est ad partem salis in cellula gubernandam, quin prae osmosi nimis tumesceat ac displodeat.

Aqua siccante, euglenae putamine crasso circumdant se ipsae, et dormiunt (ut sporae) donec circumiecta commodior erunt.

Euglenae fissione multiplicantur velut amoebae. Nonnunquam usque formant inflorescentiam algarum, id est aquae superficies viridi colore obtegent.

Fontes 
"Phylogeny and taxonomic revision of plastid-containing euglenophytes based on SSU rDNA sequence comparisons and synapomorphic signatures in the SSU rRNA secondary structure." 
Protist 154 (1): 99–145. Quidam situs interretialis.

Biota
Chlamydomonas
Instar animans
Protista
Volvox

Nexus externi 
Biology Corner
Protist Images: Euglena
Euglena at Droplet - Microscopy of the Protozoa
Images and taxonomy
Effect of Light Intensity on the Lipid Composition of Euglena gracilis
Mitochondrial trans-2-Enoyl-CoA Reductase of Wax Ester Fermentation from Euglena gracilis Defines a New Family of Enzymes Involved in Lipid Synthesis
Aliphatic Chains of Esterified Lipids in Isolated eyesptos {?} of Euglena gracilis var. bacillaris1 (pdf)
Nature, intracellular distribution and formation of terpenoid quinones in Euglena gracilis. (pdf)
Tryptophan Synthetase in Euglena gracilis Strain G (pdf)
Lipid Metabolism of Manganese-deficient Algae: I. Effect of Manganese Deficiency on the Greening and the Lipid Composition of Euglena Gracilis Z. (pdf)
A hydroxy fatty acid dehydrogenase in Euglena gracilis (pdf)
Comparative studies of biosynthesis of galactolipids in Euglena gracilis strain Z (pdf)
The Euglena Project
Das Augentierchen Euglena: Ein einzelliger Geißelträger des Süßwassers
Euglena - Videosequenzen der Bewegungsmöglichkeiten
Artenliste beim Integrated Taxonomic Information Seystem (ITIS)

Genera eukaryotorum
Flagellata
Taxa Ehrenberg
Taxa 1830