Spaulding, S.,
Edlund, M.
(2008).
Cyclostephanos.
In Diatoms of North America.
Retrieved December 02, 2024, from https://diatoms.org/genera/cyclostephanos
Centric
Cyclostephanos
Striae fasciculate, extending from valve face to mantle
Costae may form 2 branches on mantle
Rimoportulae positioned near, and below spine on mantle
The striae of Cyclostephanos are organized into bundles, or fascicles, that extend from the valve face onto the mantle. The costae, or thickened ribs, also extend from the valve face to mantle. The costae branch on the valve mantle below the plane of the marginal spines, a key feature of the genus. Marginal rimoportulae are positioned...