Spaulding, S.
(2013).
Neidiomorpha.
In Diatoms of North America.
Retrieved May 01, 2026, from https://diatoms.org/genera/neidiomorpha?x-craft-preview=cab8b13ef68d1e257235fd2491770f51dfe0c9a6c0ad3b95411776e5316d603alxhbyabypv
Symmetric Biraphid
Neidiomorpha
Shallow caves present
Central valve margin constricted
Proximal raphe ends straight
Neidiomorpha is a recently erected genus closely related to Neidium. In Neidiomorpha, the marginal canals are greatly reduced and are termed "shallow caves". Valves are linear, with central margins constricted. The apices are rostrate. The proximal raphe ends are simple pores, slightly deflected to the primary side. Two plastids are...