Spaulding, S.,
Edlund, M.
(2009).
Amphipleura.
In Diatoms of North America.
Retrieved November 21, 2024, from https://diatoms.org/genera/amphipleura
Symmetric Biraphid
Amphipleura
Median rib present
Median rib split at the poles, forming 'needle eyes'
Raphe short
Amphipleura is distinguished by the narrow, median rib that extends along the long axis of the valve. This rib is formed on the internal face of the valve, a feature observable in SEM. Near the valve apices, the rib forms two branches, or 'needle eyes', around the raphe system. The raphe of Amphipleura is short, limited to the area...