Gongrosira

Gongrosira
Gongrosira viridis
Scientific classification
Clade:	Viridiplantae
Division:	Chlorophyta
Class:	Chlorophyceae
Order:	Chaetophorales
Family:	Chaetophoraceae
Genus:	Gongrosira Kützing, 1843
Type species
Gongrosira sclerococcus
Species [1]
G. calcarea G. cavernicola G. chapmanii G. debaryana G. disciformis G. ericetorum G. fluminensis G. gaditana G. incrustans G. jollyi G. lacustris G. leptotricha G. onusta G. papuasica G. pseudoprostrata G. schmidlei G. sclerococcus G. scourfieldii G. stagnalis

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. Guiry, M.D.; Guiry, G.M. "Gongrosira". AlgaeBase . University of Galway . Retrieved 2025-03-06.
2. 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.