Ocellus

An ocellus is a porefield that has a distinct hyaline rim between its pores and the areolae. Latin for "small eye". Plural is ocelli.

Ocelli are found in polar centric genera such as Pleurosira and Eupodiscus.

See ocellulimbus, porefield, and pseudocellus for more detail.

Anonymous (1975) Proposals for standardization of diatom terminology and diagnoses Nova Hedwigia, Beihefte 53: 323-354
Ross, R., Cox, E.J., Karayeva, N.I., Mann, D.G., Paddock, T.B.B., Simonsen, R. and Sims, P.A. (1979) An amended terminology for the siliceous components of the diatom cell Nova Hedwigia, Beihefte 64: 513-533
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.