Achnanthes Bory


Frustules pennate, monoraphid, symmetrical to the apical and transapical axes, flexed about the transapical axis. Due to this flexure, raphe valve is usually concave, rapheless valve usually convex. Raphe and rapheless valves have similar or different striae patterns. Occur in periphyton, adnate, or at the ends of short mucilaginous stalks.

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.