Dombeya

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Dombeya
Dombeya wallichii2.jpg
Pink-ball ( Dombeya wallichii ) inflorescence
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Malvaceae
Subfamily: Dombeyoideae
Genus: Dombeya
Cav. (1786)
Species

Several, see text

Synonyms [1]
  • AcropetalumA.Juss. (1849), nom. superfl.
  • AssoniaCav. (1786)
  • AstrapaeaLindl. (1821)
  • CavanillaJ.F.Gmel. (1792)
  • HilsenbergiaBojer (1842), nom. illeg.
  • LeeuwenhoeckiaE.Mey. ex Endl. (1839), not validly publ.
  • VahliaDahl (1787), nom. illeg.
  • WalcuffaJ.F.Gmel. (1792)
  • WalkuffaBruce ex Steud.
  • XeropetalumDelile (1826)

Dombeya is a flowering plant genus. Traditionally included in the family Sterculiaceae, it is included in the expanded Malvaceae in the APG and most subsequent systematics. These plants are known by a number of vernacular names which sometimes, misleadingly, allude to the superficial similarity of flowering Dombeya to pears or hydrangeas (which are unrelated). Therefore, the genus as a whole is often simply called dombeyas. The generic name commemorates Joseph Dombey (1742–1794), a French botanist and explorer in South America, involved in the notorious "Dombey affair", embroiling scientists and governments of France, Spain, and Britain for more than two years.

Contents

Distribution

These plants grow chiefly throughout Africa and Madagascar. Madagascar has the majority of species, with approximately 175 native species. 19 are found on the African mainland, with one, Dombeya torrida , also extending into the southwestern Arabian Peninsula. [2] 24 species are native to the Mascarene Islands, of which 23 are endemic to the islands. [3] Dombeya acutangula is native to east Africa, Madagascar, and the Mascarenes, with a disjunct population in Laos in Southeast Asia. [4]

Taxonomy

Formerly believed to hold only about 80 species, in the present delimitation, Dombeya is one of the most speciose Malvaceae genera, containing as many as 255 species. Most have been moved here from distinct genera, which are now considered junior synonyms. [5] Some of these might warrant recognition as subgenera, to show the evolutionary and phylogenetic patterns of the numerous dombeyas more clearly. [6] In addition to the synonyms listed here, Astiria is suspected to be a rather distinct derivative of Dombeya and would thus have to be included in the present genus. [6] This requires renaming of species, as A. rosea conflicts with D. rosea, a junior synonym of D. burgessiae . Furthermore, several species have been moved here from related genera that are still valid, namely Pentapetes . [5]

Dombeya of L'Héritier de Brutelle is a synonym of Tourrettia (Bignoniaceae). Dombeya of Lamarck is a synonym of Araucaria .

Selected species

There are 197 accepted species of Dombeya. [1] Selected species include:

Dombeya elegans DombeyaElegans.JPG
Dombeya elegans
Dombeya pilosa flowers Dombeya pilosa flowers.JPG
Dombeya pilosa flowers
Dombeya burgessiae Dombeya burgessiae Montjuic.jpg
Dombeya burgessiae

Footnotes

  1. 1 2 Dombeya Cav. Plants of the World Online . Retrieved 25 June 2023.
  2. Skema, Cynthia. "Toward a New Circumscription of Dombeya (Malvales: Dombeyaceae): A Molecular Phylogenetic and Morphological Study of Dombeya of Madagascar and a New Segregate Genus, Andringitra." Taxon, vol. 61, no. 3, 2012, pp. 612–628. JSTOR, www.jstor.org/stable/41679276. Accessed 23 Aug. 2021.
  3. Le Péchon, Timothée, Qiang Dai, Li-Bing Zhang, Xin-Fen Gao, and Hervé Sauquet (2015). "Diversification of Dombeyoideae (Malvaceae) in the Mascarenes: Old Taxa on Young Islands?" International Journal of Plant Sciences Volume 176, Number 3 March/April 2015. https://doi.org/10.1086/679350
  4. "Dombeya acutangula Cav.". Plants of the World Online, Kew Science. Accessed 23 August 2021. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:822892-1
  5. 1 2 Hinsley (2008)
  6. 1 2 Cao et al. (2006)
  7. Cao et al. (2006), Hinsley (2008)

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References