Gongrosira is a genus of green algae in the family Chaetophoraceae.[1] Species of this genus often form dense green cushions on stones, shells, or aquatic plants; rarely they are terrestrial.[2]

Gongrosira consists of a prostrate and an erect system of filaments, attached to a substrate. The prostrate system is generally pseudoparenchymatous, and may be single- or multi-layered. The erect filaments are short and terminate in blunt tips. Cells are cylindrical, with a parietal chloroplast and one to several pyrenoids. Asexual reproduction occurs via zoospores, aplanospores or akinetes. Zoospores are biflagellate and ovoid with a stigma.[2][1]

The genus Gongrosira is taxonomically problematic, because many species are distinguished based on characters that are variable and/or have significant overlap with each other,[2] and disagreement about the taxonomic placement of some species.[3]

References

  1. ^ a b c Guiry, M.D.; Guiry, G.M. "Gongrosira". AlgaeBase. University of Galway. Retrieved 2025-03-06.
  2. ^ a b c John, David M.; Rindi, Fabio (2014). "Chapter 8. Filamentous (Nonconjugating) and Plantlike 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. ^ Bicudo, Carlos E. M.; Menezes, Mariângela (2006). Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições (2 ed.). RiMa Editora. p. 508. ISBN 857656064X.


Allikas: https://en.wikipedia.org/wiki/Gongrosira
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