Potapova, M.,
Spaulding, S.,
Edlund, M.
(2008).
Rossithidium.
In Diatoms of North America.
Retrieved September 17, 2024, from https://diatoms.org/genera/rossithidium
Monoraphid
Rossithidium
Frustules heterovalvar
Raphe valve concave, rapheless valve convex
Valves very small, linear-elliptic to lanceolate
Striae uni- or biseriate
Terminal raphe fissures absent
The valve outline is linear, elongate or lanceolate, with rounded apices. The striae are parallel throughout the valve, on both raphe and rapheless valves. The striae are variable and may be uni- or biseriate. The axial area is narrow. The raphe is straight with expanded proximal raphe ends. Terminal raphe fissures are absent. The...