Araphid

Apiculate

 

Arcuate

Pennate diatoms lacking a raphe on either valve. Examples of araphid genera include Diatoma, Fragilaria, and Synedra.


Citations

Round, F.E., Crawford, R.M. and Mann, D.G. (1990). The Diatoms. Biology and Morphology of the Genera. Cambridge University Press, Cambridge, 747 pp.