Encyonema Kutzing


Frustules biraphid, asymmetrical to the apical axis, symmetrical to the transapical axis, dorsal margin highly arched, ventral margin straight or nearly so. Stigmata lacking or, if present, located on the dorsal side of the central area. Distal raphe ends deflected ventrally. Apical pore fields lacking.

Cells occur singly, free or in mucilaginous sheaths, or in mucilaginous filaments with many other cells. Within this genus are species which, in the classical literature, are included in Cymbella. Krammer (1982) showed the ultra structure of the species in Encyonema is consistent and different from other species included in Cymbella.

Light Microscope Image(s)

Each image is accompanied by the genus and species, California Academy of Sciences slide number (ie. CAS 612010), location of the specimen on the slide, and dimension in microns.