Quadrigula

Quadrigula is a genus of green algae in the family Selenastraceae.[1] It is commonly found in freshwater habitats as phytoplankton.[2]

Quadrigula
Scientific classification Edit this classification
(unranked): Viridiplantae
Division: Chlorophyta
Class: Chlorophyceae
Order: Sphaeropleales
Family: Selenastraceae
Genus: Quadrigula
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Species
  • Quadrigula chodatii
  • Quadrigula closterioides

Description

Quadrigula forms colonies of two, four, or cells within a common mucilaginous envelope. Cells are cigar-shaped, 7 to 45 μm long and 1 to 8 μm wide. The cells are bundled such that the long axes of cells are parallel to each other. The tips of the cells are rounded or acutely pointed. Cells contain a single nucleus and one parietal chloroplast; the chloroplast may or may not contain a pyrenoid.[2][3]

Species identification relies on details of the cell size and shape.[3]

References
  1. See the NCBI webpage on Quadrigula. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
  2. Shubert, Elliot; Gärtner, Georg (2014). "Chapter 7. Nonmotile Coccoid and Colonial Green Algae". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. ISBN 978-0-12-385876-4.
  3. Guiry, M.D.; Guiry, G.M. "Quadrigula". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2023-06-03.
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