Phycokey - Euglena images

Euglena (Euglenophyceae)

Euglena sp. from a lake in NH USA

Euglena sp. from a lake in NH USA
Red 'eyespot' is evident

Euglena sp. from a lake in NH USA
Large paramylon starch bodies are evident.

Euglena acus
Photo by Ann St. Amand (PhycoTech) posted online

Euglena spirogyra
Photograph from Proyecto Agua at Flickriver posted online

Euglena sp. containing two large cylindrical starch bodies and a red eyespot. From Lake Cochichewick, North Andover MA, USA 18 Oct. 2016.

Euglena sanguinea.

Modified from image posted at wwa-an.bayern.de. Ichthyotoxins are produced by this species, and by E. granulate (Triemer et al. 2004).

Triemer, R.E., P.V. Zimba, and M. Rowan 2004. Identification of euglenoids that produce ichthyotoxin(S) (Euglenophyta). J. Phycol 39:56-57.

Euglena sanguinea has formed a bloom in an English lake
Photograph posted at nhm.ac.uk