Skip to content

Diagnostic features

Cells roughly spherical, with a groove (cingulum) circling the cell containing one of two flagella. The cingulum is at approx. the cell equator, so the two halves of the cell are a similar size.  The periplast plates surrounding the cells of this genus are much thinner than most, leading to a "naked" or "unarmoured" appearance.

Typical habitats

Lakes and ponds with moderate to good water quality


Kingdom Chromista
Phylum Myzozoa
Class Peridinea
Order Gymnodiniida
Family Gymnodiniidae
Common name Dinoflagellates