Tetrabaena socialis, a colonial volvocid flagellate. T. socialis was formerly known as Gonium sociale until the monospecific genus Tetrabaena was erected (Nozaki,H. and Itoh, M. J. Phycol. 30:353-365, 1994).The colonies are plate-shaped with four cells all oriented in the same direction. Extracellular matrix joining adjacent cells can be seen. The gelatinous envelope surrounding the whole colony is not seen in these images. The ovoid cells have two equal-length flagella, a small eyespot, large cup-shaped chloroplast and posterior round pyrenoid. From freshwater pond near Boise, Idaho. Oblique illumination.
Tetrabaena, a green alga (Chlorophyta) in which four cells form a colony within a delicate mucoid matrix. Each cell with two apical flagella. This image shows an eyespot in one cell.
Tetrabaena, a green alga (Chlorophyta) in which four cells form a colony within a delicate mucoid matrix. Each cell with two apical flagella that beat with a breast-stroke pattern.
Description: Tetrabaena dujardinii Fromentel = Tetrabaena socialis (Dujardin) Nozaki & M.Itoh. Date: 1874. Source: Fromentel, É. de 1874. Études sur les microzoaires, ou infusoires proprement dits: comprenant de nouvelles recherches sur leur organisation, leur classification et la description des espèces nouvelles ou peu connues. plate XXVI: fig. 2 https://www.biodiversitylibrary.org/page/14938373 (cropped for fig. 2). Author: Louis Édouard Gourdan de Fromentel (1824–1901). Permission(Reusing this file): : This file comes from the Biodiversity Heritage Library. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Deutsch | English | español | français | italiano | македонски | Nederlands | polski | +/−.