Callitriche

{{Short description|Genus of aquatic plants}}

{{Automatic taxobox

|image = Illustration Callitriche palustris0.jpg

|image_caption = Water-starwort (Callitriche palustris) from Thomé
Flora von Deutschland, Österreich und der Schweiz 1885

|taxon = Callitriche

|authority = L. (1753)

|subdivision_ranks = Species

|subdivision = 75; see text

|subdivision_ref = {{cite web |title=Callitriche L. |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30006057-2 |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |access-date=11 September 2024}}

|synonyms =

  • Stellaria {{small|Ség. (1754), nom. illeg.}}
  • Stellina {{small|Bubani (1897), nom. superfl.}}

|synonyms_ref =

}}

Callitriche is a genus of largely aquatic plants known as water-starwort. Previously, it was the only genus in the family Callitrichaceae. However, according to the APG II system this family is now included in the Plantaginaceae (plantain family). The family name Callitrichaceae retains its status as nomen conservandum (name to be retained).

Species

75 species are accepted.

Phylogeny and evolution

The first molecular phylogeny of the aquatic genus of 50 species discerned three clades: Clade A (three species, widespread); Clade C (10 species, New World); Clade D (six species, Europe).Les, D. H., Philbrick, C. T. (2000) [http://www.ingentaconnect.com/content/els/03043770/2000/00000068/00000002/art00114 Phylogenetic studies in Callitriche: implications for interpretation of ecological, karyological and pollination system evolution] Aquatic Botany 68: 123-141 The parsimony analyses revealed that aneuploid reduction (n=5 to 4) and polyploidy (n=5 to 10) have evolved at least twice in the genus, whereas the obligately submersed growth habit and hypohydrophily have evolved once.

References

  • {{ITIS |id=32049 |taxon=Callitrichaceae}}
  • https://web.archive.org/web/20020806205418/http://www.usa.sp2000.org/AnnualChecklist2000.html

;Notes

{{Reflist}}

Further reading

  • Callitriche platycarpa Recorded from Eglinton Canal, Galway, Ireland. Pybus, C. and O'Halloran, P. 2009. Distribution of some submerged aquatic macrophytes in the Eglinton Canal, Galway. Ir. Nat. J. 30: 51 - 53.