Spaulding, S.,
Edlund, M.
(2008).
Ctenophora.
In Diatoms of North America.
Retrieved December 03, 2024, from https://diatoms.org/genera/ctenophora
Araphid
Ctenophora
Valve elongate, linear-lanceolate
Central area a thickened fascia with ghost striae
Rimoportulae present at each pole
Rimoportula positioned diagonally
Ctenophora frustules are elongate and linear-lanceolate in valve outline. The central part of the valve has a thickened area, or fascia, with faint, ghost striae. Each pole contains a rimoportula, positioned near the axial area. The rimoportula is positioned diagonally. Living cells grow in tuft-like colonies, attached to surfaces by...