Bambusina

Bambusina is a genus of freshwater green algae in the family Desmidiaceae. Bambusina is a cosmopolitan genus, typically associated with acidic and oligotrophic waters. Species of this genus, particularly B. borreri, have been reported in all continents except Antarctica.

==Description== Bambusina consists of barrel-shaped cells joined end-to-end to form filaments. The cells are elongate (wider than long) and have a shallow median constriction (isthmus) where the two halves (semicells) meet. Cells are biradiate, omniradiate or rarely triradiate in cross section. The cell wall has longitudinal rows of pores, and may sometimes have a row of pointed spines. Each semicell has a single chloroplast which is stellate in cross section, with a central pyrenoid. A nucleus is located in the isthmus.