Spaulding, S.,
Edlund, M.
(2008).
Karayevia.
In Diatoms of North America.
Retrieved November 21, 2024, from https://diatoms.org/genera/karayevia
Monoraphid
Karayevia
Rapheless valve with nearly parallel striae
Raphe valve with radial striae
External distal raphe fissures curved to one side
Internal expression of areolae occluded
The valves of Karayevia are elliptic to lanceolate with rostrate to capitate ends. The rapheless valve possesses striae that are nearly parallel, composed of circular areolae. The raphe valve possesses radial striae, composed of transapically elongate areolae. Externally, the distal raphe fissures curve to the same side. Internally, the...