Biseriate | Glossary - Diatoms of North America

Biseriate

Biseriate describes the number of rows of areolae in a stria. A biseriate stria has two rows of areolae. In Latin, biseriate means two series.

Alternative Terms

doubly punctate: Much of the diatom literature uses "doubly punctate" to describe striae composed of two rows of areolae.

Citations

Cox, E.J. (2012) Ontogeny, homology, and terminology - wall morphogenesis as an aid to character recognition and character state definition for pennate diatom systematics Journal of Phycology 48: 1–31

Publication Link: 10.1111/j.1529-8817.2011.01081.x
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.

R Nodosum Areolae — Here, the biseriate striae of Rossithidium nodosum are shown in a SEM image. In some species, the biseriate striae are quite visible in LM. In other species, they may not be discernable without SEM.

G Loweii Biseriate — Biseriate striae are a distinguishing character of the genus Gomphoneis. Here, the biseriate striae of G. loweii are prominent in an LM image.