Bishop, I.,
Spaulding, S.
(2014).
Krasskella.
In Diatoms of North America.
Retrieved May 01, 2026, from https://diatoms.org/genera/krasskella?x-craft-preview=cab8b13ef68d1e257235fd2491770f51dfe0c9a6c0ad3b95411776e5316d603alxhbyabypv
Symmetric Biraphid
Krasskella
Valves small
Proximal raphe ends distant
Striae composed of an elongate areola on valve face
Valves are small and elongate. The axial and central areas are linear. Striae composed of an elongate areola on valve face and a circular areola on the valve mantle. The proximal raphe ends distant and the raphe fissures are slightly oblique. Helictoglossae at the proximal and distal raphe ends are not well developed. Frustules...