Spaulding, S.
(2013).
Neidiomorpha.
In Diatoms of North America.
Retrieved May 01, 2026, from https://diatoms.org/genera/neidiomorpha?x-craft-preview=409442409a997390693ff24c7010fd6f1c96fb56f8f091fa016a63de9a54aaccecpiqubknd
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...