| Guettarda | |
|---|---|
 | |
| Guettarda speciosa | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Subfamily: | Cinchonoideae |
| Tribe: | Guettardeae |
| Genus: | Guettarda L. (1753) |
| Type species | |
| Guettarda speciosa L. | |
| Species [1] | |
145; see text | |
| Synonyms [1] | |
| |
Guettarda is a plant genus in the family Rubiaceae. Most of these plants are known by the common name velvetseed.
Most of the species are Neotropical. [2] Twenty are found in New Caledonia and one reaches Australia. [3] A few others are found on islands and in coastal areas of the Indian and Pacific Oceans. It is a tree of coastal habitats, up to 18 m (59 ft) in height.
Three species (G. odorata, G. scabra, G. speciosa) are known in cultivation. [4] Guettarda argentea provides edible fruit. [2] The type species for the genus is Guettarda speciosa. [5]
Guettarda was named by Linnaeus in 1753 in his book Species Plantarum . [6] [7] This generic name is in honour of the 18th century French naturalist Jean-Étienne Guettard. [8]
The genus Guettarda is much in need of revision. Molecular phylogenetic studies have found it to be several times polyphyletic with some of its clades paraphyletic over small genera. [9]
Plants of the World Online currently accepts 145 species, which are listed below. [1] Other estimates of the number of species range from about 50 [4] to 162. [10]
Xylosma is a genus of flowering plants in the family Salicaceae. It contains around 100 species of evergreen shrubs and trees commonly known as brushhollies, xylosmas, or, more ambiguously, "logwoods". The generic name is derived from the Greek words ξύλον (xylon), meaning "wood, tree", and ὀσμή (osmé), meaning "smell", referring to the fragrant wood of some of the species. The Takhtajan system places it in the family Flacourtiaceae, which is considered defunct by the Angiosperm Phylogeny Group.
Allenanthus was a genus of flowering plants in the family Rubiaceae but is no longer recognized. It has been sunk into synonymy with Machaonia.
Arachnothryx is a genus of flowering plants in the family Rubiaceae. It contains about 107 species. It is found from Mexico to Peru and in Trinidad.
Exostema is a genus of flowering plants in the family Rubiaceae. It consists of trees and shrubs, endemic to the neotropics, with most of the species occurring in the West Indies.
Rondeletia is a genus of flowering plants in the family Rubiaceae. It is endemic to the Neotropics. There are around 160 species.
Guettarda speciosa, with common names sea randa, or zebra wood, is a species of shrub in the family Rubiaceae found in coastal habitats in tropical areas around the Pacific Ocean, including the coastline of central and northern Queensland and Northern Territory in Australia, and Pacific Islands, including Micronesia, French Polynesia and Fiji, Malaysia and Indonesia, Maldives and the east coast of Africa. It reaches 6 m in height, has fragrant white flowers, and large green prominently-veined leaves. It grows in sand above the high tide mark.
Chiococca is a genus of flowering plants in the family Rubiaceae. It currently holds 23 species that are native to Florida, Texas, Mexico, Central America, much of South America, the West Indies, and the islands of Galápagos and Fernando de Noronha.
Rogiera is a genus of flowering plants in the family Rubiaceae. It has 15 species and its native range is from Mexico to Colombia.
Guettardeae is a tribe of flowering plants in the family Rubiaceae and contains about 748 species in 14 genera. Its representatives are widespread geographically and are found in the tropics and subtropics.
Rondeletieae is a tribe of flowering plants in the family Rubiaceae and contains about 178 species in 8 genera. Its representatives are found from southern Mexico to northern South America and in the Caribbean.
Solenandra is a genus of flowering plant in the family Rubiaceae, native from Mexico to Central America and the Caribbean. The genus was established by Joseph Dalton Hooker in 1873.
Ekmanianthe is a genus of flowering plants in the family Bignoniaceae. It is most closely related to Tabebuia and has sometimes been included within it. It consists of two species of trees, neither of which is especially common in any part of its range:
Coussarea is a genus of flowering plants in the family Rubiaceae. The genus is found from southern Mexico to tropical America.
Schmidtottia is a genus of flowering plants in the family Rubiaceae, native to eastern Cuba. Adapted to serpentine soils, they are nickel hyperaccumulators.
Samuelssonia is a monotypic genus of flowering plants belonging to the family Acanthaceae. It has only one known species, Samuelssonia verrucosa, a small tree which grows to 5 meters tall which is native to the Massif de la Hotte in Haiti.
Stenostomum is a genus of flowering plant in the family Rubiaceae, native from southern Mexico to tropical South America. The genus was established by Karl Friedrich von Gaertner in 1806.