Round et Bukhtiyarova ex Round 1998 Category: Monoraphid
TYPE SPECIES: Achnanthes clevei Grunow in Cleve et Grunow
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 areolae are occulded. Cells grow attached to sand grains, with many species preferring alkaline waters. This genus contains species related to Achnanthes clevei Grunow in Cleve et Grunow.
The original description of the genus, as Kolbesia, was invalid because the type was not designated (Fourtanier and Kociolek 1999) Round (1998) later validily published the genus. The type of Kolbesia and its members have been transfered to Karayevia.
Cite This Page:
Spaulding, S., and Edlund, M. (2008). Karayevia. In Diatoms of the United States. Retrieved October 31, 2014, from http://westerndiatoms.colorado.edu/taxa/genus/Karayevia