(Hust.) Bukht. 1999 Category: Monoraphid
BASIONYM: Achnanthes gessneri Hust. 1953
SYNONYM(S): Achnanthes ploenensis var. gessneri (Hust.) Lange-Bert. in Lange-Bert. and Krammer
Contributor: Marina Potapova - May 2010
Length Range: 11-16 µm
Width Range: 4.8-5.6 µm
Striae in 10 µm: 14-16 in the center of raphe valve, 15-17 in the center of raphe valve, up to 20 at the ends
Valves are elliptical-lanceolate with subrostrate to rostrate apices. Both raphe and rapheless valves have a narrow lanceolate axial area and lack a distinct central area. The raphe is straight. Striae on the raphe valve are strongly radiate, becoming parallel to slightly convergent toward the apices. The striae on the rapheless valve are slightly radiate, becoming parallel to slightly convergent toward the apices. The striae on the rapheless valve are interrupted by a marginal longitudinal line on each side of the valve.
Basionym: Achnanthes gessneri
Author: Hust. 1953
Length Range: 14-17 µm
Width Range: 5-6 µm
Striae in 10 µm: 16 in the center of raphe valve
Valvae elliptico-lanceolatae apicibus obtuse rostratis, 14-17 µ latae. Rhaphovalva rhaphe directa poris centralibus approximatis, area axiali anguste lanceolata, striis transapicalibus radiantibus in media parte circiter 16 in 10 µ, ad apices versus paulo densioribus, usque ad 20 in 10 µ. Areovalva area axiali anguste lanceolata, striis transapicalibus in media parte lenissime radiantibus vel ad lineam mediam perpendicularibus, 16-20 in 10 µ, ad apices versus magis radiantibus et paulo densioribus, prope marginem costa longitudinali decussatis. Fig. 14-19.
Cite This Page:
Potapova, M. (2010). Karayevia ploenensis. In Diatoms of the United States. Retrieved April 22, 2018, from http://westerndiatoms.colorado.edu/taxa/species/karayevia_ploenensis
Species: Karayevia ploenensis
Contributor: Marina Potapova
Reviewer: Rex Lowe
Bukhtiyarova, L. (1999). Diatoms of Ukraine inland waters. National Academy of Sciences of Ukraine, M.G. Kholodny Institute of Botany, Kyiv, Ukraine. 133 pp.
Hustedt, F. (1953). Diatomeen aus der Oase Gafsa in Südtunesien, ein Beitrag zur Kenntnis der Vegetation afrikanischer Oasen. Archiv für Hydrobiologie 48: 145-153.
Karayevia ploenensis var. gessneri CAS
Karayevia ploenensis var. gessneri NCBI
NADED ID: 125008