Exostema | |
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Illustration of Exostemma caribaeum | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Gentianales |
Family: | Rubiaceae |
Subfamily: | Cinchonoideae |
Tribe: | Chiococceae |
Genus: | Exostema (Pers.) Bonpl. |
Type species | |
Exostema caribaeum | |
Synonyms | |
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. [1] [2]
Exostema is a genus of neotropical trees and shrubs. The flowers have a slender corolla tube with recurved corolla lobes. The stamens are inserted near the base of the corolla tube and exserted well beyond its mouth. The anthers are long and basifixed. [3]
The type species for the genus is Exostema caribaeum . [4] It is a tree of Central America and the Caribbean. Its lumber is of limited use. [1]
Exostema was first named by Christiaan Hendrik Persoon as a subgenus of Cinchona . [5] It was first validly published as a genus by Aimé Bonpland in 1807. [6] [7] The generic name is derived from the Ancient Greek words, exo, meaning "outside", and stema, "stamen". [8]
As circumscribed in 2010, Exostema was probably polyphyletic. [9] Species have since been moved to other genera.
As of March 2023 [update] , Plants of the World Online accepted the following species: [10]