Cruciform

Cribrum

 

Distal raphe

Cross-shaped, usually applied to describe the valve outline of some diatoms.

Citations

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

Image Credit: Eduardo Morales

Scanning electron micrograph of Staurosirella leptostauron, a species with a cruciform valve outline.

Image Credit: Eduardo Morales

Light micrograph of Staurosirella leptostauron, a species with a cruciform valve outline.