''Callitriche'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of largely aquatic plants known as water-starwort. Previously, it was the only

in the family Callitrichaceae. However, according to the

APG II system The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Gr ...

this family is now included in the

Plantaginaceae Plantaginaceae, the plantain family, is a large, diverse family of flowering plants in the order Lamiales that includes common flowers such as snapdragon and foxglove. It is unrelated to the banana-like fruit also called "plantain." In older ...

(plantain family). The family name Callitrichaceae retains its status as ''nomen conservandum'' (name to be retained).

Species

*''

Callitriche antarctica ''Callitriche antarctica'', commonly known as the Antarctic water-starwort, is a small, prostrate plant with tiny yellow flowers in the family Plantaginaceae (though sometimes placed in its own family – Callitrichaceae). It is found in wet pla ...

'', Antarctic water-starwort *''

Callitriche brutia ''Callitriche brutia'', the pedunculate water-starwort, is a submerged/floating-leaved aquatic plant Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater). They are also referred to as hydrop ...

'', pedunculate water starwort *''

Callitriche christensenii ''Callitriche christensenii'' is a species of plant in the family Plantaginaceae. It is endemic to Saint Helena. Its natural habitats are rivers, freshwater marshes, and freshwater spring Spring(s) may refer to: Common uses * Spring (season) ...

'' *'' Callitriche fassetti'', Fassett's water starwort *''

Callitriche hamulata ''Callitriche hamulata'' is a species of flowering plant belonging to the family Plantaginaceae. Description It is a submerged plant with slender, branching stems about long. The light green, narrow leaves are up to long and 1-2mm wide, slig ...

'', intermediate water starwort *''

Callitriche hermaphroditica ''Callitriche hermaphroditica'' (vernacular name: autumnal water-starwort) is a species of flowering plant belonging to the family Plantaginaceae Plantaginaceae, the plantain family, is a large, diverse family of flowering plants in the order ...

'', autumn water starwort **Synonym '' Callitriche autumnalis'' *''

Callitriche heterophylla ''Callitriche heterophylla'', commonly called twoheaded water-starwort, is a species of flowering plant in the family Plantaginaceae. It is native to North America, where it found in the north from Greenland to Alaska, south to Mexico. It is wide ...

'', differentleaf water starwort **Synonym '' Callitriche anceps, Callitriche bollanderi'' *''

Callitriche intermedia ''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 fam ...

'', narrowleaf water starwort *'' Callitriche japonica'' **Synonym '' Callitriche nana'' *''

Callitriche longipedunculata ''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 fam ...

'', longstalk water starwort *''

Callitriche marginata ''Callitriche marginata'' is a species of aquatic plant known by the common name winged water starwort. ''Callitriche marginata'' is native to the west coast of North America from British Columbia to Baja California, where it grows in and around ...

'', winged water starwort **Synonym '' Callitriche sepulta'' *''

Callitriche muelleri ''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 fam ...

'' *''

Callitriche obtusangula ''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 fam ...

'', blunt-fruited water starwort *''

Callitriche palustris ''Callitriche palustris'', the vernal water-starwort, narrow-fruited water-starwort, or spiny water starwort, is a species of aquatic plants. It is the type species of its genus. References External links * * ''Callitriche palustris''at ...

'', spiny water starwort **Synonym '' Callitriche verna'' *''

Callitriche pedunculosa ''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 fam ...

'', Nuttall's water starwort **Synonym '' Callitriche nuttallii'' *''

Callitriche peploides ''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 fam ...

'', matted water starwort *''

Callitriche petrieri ''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 fam ...

'' *''

Callitriche platycarpa ''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 fam ...

'', various-leaved water starwort *'' Callitriche pulchra'', beautiful water starwort *'' Callitriche sonderi'' **Synonym '' Callitriche capricorni''Bean, A. R. (2007
A taxonomic revision of ''Callitriche'' L. (Callitrichaceae) in Australia
''

Austrobaileya ''Austrobaileya'' is the sole genus consisting of a single species that constitutes the entire flowering plant family Austrobaileyaceae. The species ''Austrobaileya scandens'' grows naturally only in the Wet Tropics rainforests of northeast ...

'' 7(3): 545-554 *'' Callitriche stagnalis'', pond water starwort *''

Callitriche terrestris ''Callitriche terrestris'' is a species of plant in the family Plantaginaceae found in Canada and in the eastern United States. References terrestris This list of Latin and Greek words commonly used in systematic names is intended to help t ...

'', terrestrial water starwort **Synonym '' Callitriche austinii, Callitriche deflexa'' *'' Callitriche trochlearis'', effluent water starwort *''

Callitriche truncata ''Callitriche truncata'', the short leaved water starwort, is a species of plant in the family Plantaginaceae Plantaginaceae, the plantain family, is a large, diverse family of flowering plants in the order Lamiales that includes common flowe ...

'', short-leaved water starwort *'' Callitriche umbonata'' *''

Callitriche verna ''Callitriche verna'' is a submerged/floating-leaved aquatic plant in the family Plantaginaceae Plantaginaceae, the plantain family, is a large, diverse family of flowering plants in the order Lamiales that includes common flowers such as sna ...

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
Phylogenetic studies in ''Callitriche'': implications for interpretation of ecological, karyological and pollination system evolution
''

Aquatic Botany ''Aquatic Botany'' ("An International Scientific Journal dealing with Applied and Fundamental Research on Submerged, Floating and Emergent Plants in Marine and Freshwater Ecosystems") is a peer-reviewed scientific journal covering research on struc ...

'' 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

* *https://web.archive.org/web/20020806205418/http://www.usa.sp2000.org/AnnualChecklist2000.html ;Notes

External links

Callitrichaceae of Mongolia in FloraGREIF
{{Taxonbar, from1=Q156846, from2=Q2703020 Freshwater plants Plantaginaceae genera

Species

Phylogeny and evolution

References

Further reading

External links