Spaulding, S.
(2015).
Gomphosinica.
In Diatoms of North America.
Retrieved November 02, 2024, from https://diatoms.org/genera/gomphosinica
Asymmetric Biraphid
Gomphosinica
Valves club-shaped
Striae composed of 2-3 rows of areolae
Stigma present
Internally, stigma covered by hood
Apical pore field present
Valves are clavate, or club-shaped, in valve view. In girdle view, frustules are cuneate. Striae are composed of 2-3 rows of areolae. Internally, the proximal raphe ends are unilaterally curved. A prominent stigma is present in the central area. Externally, the stigma has a round opening. Internally, the stigma has many small, round...