Callitriche

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).

Callitriche
Water-starwort (Callitriche palustris) from Thomé
Flora von Deutschland, Österreich und der Schweiz 1885
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Tribe: Callitricheae
Genus: Callitriche
L. (1753)
Species

See text

Species
  • Callitriche antarctica, Antarctic water-starwort
  • Callitriche brutia, pedunculate water starwort
  • Callitriche christensenii
  • Callitriche fassetti, Fassett's water starwort
  • Callitriche hamulata, intermediate water starwort
  • Callitriche hermaphroditica, autumn water starwort
    • Synonym Callitriche autumnalis
  • Callitriche heterophylla, differentleaf water starwort
    • Synonym Callitriche anceps, Callitriche bollanderi
  • Callitriche intermedia, narrowleaf water starwort
  • Callitriche japonica
    • Synonym Callitriche nana[1]
  • Callitriche longipedunculata, longstalk water starwort
  • Callitriche marginata, winged water starwort
    • Synonym Callitriche sepulta
  • Callitriche muelleri
  • Callitriche obtusangula, blunt-fruited water starwort
  • Callitriche palustris, spiny water starwort
    • Synonym Callitriche verna
  • Callitriche pedunculosa, Nuttall's water starwort
    • Synonym Callitriche nuttallii
  • Callitriche peploides, matted water starwort
  • Callitriche petrieri
  • Callitriche platycarpa, various-leaved water starwort
  • Callitriche pulchra, beautiful water starwort
  • Callitriche sonderi
    • Synonym Callitriche capricorni[2]
  • Callitriche stagnalis, pond water starwort
  • Callitriche terrestris, terrestrial water starwort
    • Synonym Callitriche austinii, Callitriche deflexa
  • Callitriche trochlearis, effluent water starwort
  • Callitriche truncata, short-leaved water starwort
  • Callitriche umbonata
  • Callitriche verna

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).[3] 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.[3]

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References
  • "Callitrichaceae". Integrated Taxonomic Information System.
  • https://web.archive.org/web/20020806205418/http://www.usa.sp2000.org/AnnualChecklist2000.html
Notes
  1. Lansdown, R. V. (2006) The Genus Callitriche (Callitrichaceae) in Asia Novon 16(3): 354-361
  2. Bean, A. R. (2007) A taxonomic revision of Callitriche L. (Callitrichaceae) in Australia Austrobaileya 7(3): 545-554
  3. Les, D. H., Philbrick, C. T. (2000) Phylogenetic studies in Callitriche: implications for interpretation of ecological, karyological and pollination system evolution Aquatic Botany 68: 123-141

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.
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