Dombeya | |
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Pink-ball ( Dombeya wallichii ) inflorescence | |
Scientific classification | |
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] | |
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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.
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]
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 .
There are 197 accepted species of Dombeya. [1] Selected species include:
The Mascarene Islands or Mascarenes or Mascarenhas Archipelago is a group of islands in the Indian Ocean east of Madagascar consisting of the islands belonging to the Republic of Mauritius as well as the French department of La Réunion. Their name derives from the Portuguese navigator Pedro Mascarenhas, who first visited them in April 1512. The islands share a common geologic origin in the volcanism of the Réunion hotspot beneath the Mascarene Plateau and form a distinct ecoregion with a unique flora and fauna.
Sterculiaceae was a family of flowering plant based on the genus Sterculia. Genera formerly included in Sterculiaceae are now placed in the family Malvaceae, in the subfamilies: Byttnerioideae, Dombeyoideae, Helicteroideae and Sterculioideae.
Grewia is a large flowering plant genus in the mallow family Malvaceae, in the expanded sense as proposed by the Angiosperm Phylogeny Group. Formerly, Grewia was placed in either the family Tiliaceae or the Sparrmanniaceae. However, these were both not monophyletic with respect to other Malvales - as already indicated by the uncertainties surrounding placement of Grewia and similar genera - and have thus been merged into the Malvaceae. Together with the bulk of the former Sparrmanniaceae, Grewia is in the subfamily Grewioideae and therein the tribe Grewieae, of which it is the type genus.
Dombeya rotundifolia, the dikbas or "South African wild pear", is a small deciduous tree with dark grey to blackish deeply fissured bark, found in Southern Africa and northwards to central and eastern tropical Africa. Formerly placed in the Sterculiaceae, that artificial group has now been abandoned by most authors and the plants are part of an enlarged Malvaceae.
Dombeya acutangula, the bois bete or mahot tantan, is a species of flowering plant in the family Malvaceae. It is native to the Mascarene Islands, and Madagascar, Malawi, Mozambique, Tanzania, and Zambia.
Dombeya amaniensis is a flowering plant species found only in Tanzania. Formerly placed in the family Sterculiaceae, this artificial assemblage is now included in the Malvaceae by most authors.
Eriolaena is a genus of flowering plants. Traditionally included in the family Sterculiaceae, it is included now in the recently expanded Malvaceae. The genus is distributed in Asia and eastern Africa, from southern China through Indochina to India, Bangladesh, Nepal, Sri Lanka, Madagascar, and coastal Mozambique.
Melhania is a genus of small shrubs or herbaceous plants. Traditionally included in the family Sterculiaceae, it is included in the expanded Malvaceae in the APG and most subsequent systematics. The genus is named for Mount Melhan in Yemen.
Nesogordonia is a genus of flowering plants. It ranges across tropical Africa, Madagascar, and the Comoro Islands. The majority of species are endemic to Madagascar.
Dombeyoideae is a widely distributed subfamily of the Malvaceae, as proposed by the APG. Most of the plants placed here were once assembled with more or less related genera in the paraphyletic Sterculiaceae; a lesser number were placed in the Tiliaceae which were also not monophyletic.
Cadia is a genus of flowering plants in the family Fabaceae which belongs to the subfamily Faboideae. It includes 8 species native to northeastern Africa, the Arabian Peninsula, and Madagascar.
Dombeya wallichii is a flowering shrub of the family Malvaceae known by the common names pinkball, pink ball tree, and tropical hydrangea.
Cola is a genus of trees native to the tropical forests of Africa, classified in the family Malvaceae, subfamily Sterculioideae. Species in this genus are sometimes referred to as kola tree or kola nut for the caffeine-containing fruit produced by the trees that is often used as a flavoring ingredient in beverages. The genus was thought to be closely related to the South American genus Theobroma, or cocoa, but the latter is now placed in a different subfamily. They are evergreen trees, growing up to 20 m tall, with glossy ovoid leaves up to 30 cm long and star-shaped fruit.
Hermannia is a genus of flowering plants in the mallow family, Malvaceae. It comprises at least 65 species with many more species as yet unresolved.
Labourdonnaisia is a genus of plants in the family Sapotaceae found in tropical Asia, described as a genus in 1841.
Ruizia is a genus of flowering plants belonging to the family Malvaceae. It contains 13 species native mostly to the Mascarene Islands, and one species native to Madagascar.