Lange-Bertalot, Kobayasi and Krammer 2000 Category: Symmetrical biraphid
BASIONYM: Pinnularia saprophila Lange-Bertalot, Kobayasi and Krammer in Krammer 2000
Contributor: Marina Potapova - October 2013
Length Range: 10-20 µm
Width Range: 5.2-6.7 µm
Striae in 10 µm: 10-15
Valves are linear with apices that are capitate in larger specimens to slightly protracted in smaller specimens. The axial area is lanceolate widening into a large central area reaching the valve margins. The raphe is almost straight, with proximal ends deflected to one side. Striae are often slightly bent, radiate near the valve center and become extremely convergent at the apices.
Note that some specimens from US have a higher stria density than specified in the original description. Most specimens in the study populations, however, had stria density that fit the original description of P. saprophila.
Basionym: Pinnularia saprophila
Author: Lange-Bertalot, Kobayasi and Krammer in Krammer 2000
Length Range: 21-45 µm
Width Range: 5.7-7.5 µm
Striae in 10 µm: 9.5-11
Krammer, K. (2000). The genus Pinnularia. The Diatoms of Europe. Diatoms of Inland Waters and Comparable Habitats 1: 1-703.