Ventral

Velum

 

Voigt discontinuity

In diatoms that are asymmetrical to the apical axis, the ventral side is considered to be the side that is more narrow, as extending from the central sternum.


Citations

Barber, H.G. and Hayworth, E.Y. (1981). Guide to the Morphology of the Diatom Frustule. Freshwater Biological Association, 112 pp.