portrait

Description:

Euglena mutabilis (you-glean-a mew-tab-ill-iss) is one of the worm-like species of Euglena. Typically there is no emergent flagellum or a very short one. Yet, the organism can be distinguished as a euglenid because of the bright green plastids, the eyespot that lies external to any plastid, and because the cells can squirm. The plastids are large-ish plate like structure which wrap themselves around the cell adjacent to the pellicle. The margins of individual plastids are hard to distinguish in this micrograph. Differential interference contrast.