| Rytigynia caudatissima | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Genus: | Rytigynia |
| Species: | R. caudatissima |
| Binomial name | |
| Rytigynia caudatissima | |
Rytigynia caudatissima is a species of plant in the family Rubiaceae. It is endemic to Tanzania.
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The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules and sympetalous actinomorphic flowers. The family contains about 13,500 species in about 620 genera, which makes it the fourth-largest angiosperm family. Rubiaceae has a cosmopolitan distribution; however, the largest species diversity is concentrated in the tropics and subtropics. Economically important species include Coffea, the source of coffee, Cinchona, the source of the antimalarial alkaloid quinine, some dye plants, and ornamental cultivars.
Canthium is a genus of flowering plants in the family Rubiaceae. They are shrubs and small trees. The leaves are deciduous and the stems are usually thorny.
Lagynias was a genus of flowering plants in the family Rubiaceae but is no longer recognized. In 2005, it was sunk into synonymy with Vangueria, based on a phylogenetic study of DNA sequences.
Robynsia is a monotypic genus of flowering plants in the family Rubiaceae. It was described by John Hutchinson and was named after his friend and colleague Walter Robyns. The genus contains only one species, Robynsia glabrata, which is found in Ghana, Ivory Coast and Nigeria. The species is morphologically similar to the genus Cuviera but differs by having long, slender corolla tubes.
Rytigynia binata is a species of flowering plant in the family Rubiaceae. It is endemic to Tanzania.
Rytigynia is a genus of flowering plants in the family Rubiaceae. It is found in tropical and southern Africa. The genera Rytigynia and Fadogia form a strongly supported clade but neither of these genera is monophyletic.
Rytigynia eickii is a species of plant in the family Rubiaceae. It is found in Kenya and Tanzania.
Rytigynia hirsutiflora is a species of plant in the family Rubiaceae. It is endemic to Tanzania.
Vangueria induta is a species of flowering plant in the family Rubiaceae. It is found in Kenya and northern Tanzania.
Rytigynia longipedicellata is a species of plant in the family Rubiaceae. It is endemic to Tanzania. It is threatened by habitat loss.
Rytigynia nodulosa is a species of flowering plant in the family Rubiaceae. It is endemic to Tanzania.
Rytigynia pseudolongicaudata is a species of flowering plant in the family Rubiaceae. It is endemic to Tanzania.
Vangueria schliebenii is a species of flowering plant in the family Rubiaceae. It is endemic to Tanzania.
Tapiphyllum was a genus of flowering plants in the family Rubiaceae but is no longer recognized. In 2005, a molecular phylogenetic study showed that the type species, Tapiphyllum cinerascens, is more closely related to Vangueria than to Tapiphyllum obtusifolium and Tapiphyllum velutinum. It is not clear whether the latter two species are really separate from Vangueria. All the species of Tapiphyllum have been sunk into synonymy with Vangueria.
Vanguerieae is a tribe of flowering plants in the family Rubiaceae and contains about 640 species in 28 genera. It is one of the most species-rich groups within the family and it is distributed all over the Paleotropics.
Fadogia is a genus of flowering plants in the family Rubiaceae. The genera Rytigynia and Fadogia form a strongly supported clade but neither of these genera is monophyletic.
Ancylanthos was a genus of flowering plants in the family Rubiaceae but is no longer recognized. It was originally described by René Louiche Desfontaines in 1818. In 2005, it was sunk into synonymy with Vangueria, based on a phylogenetic study of DNA sequences.
Pachystigma was a genus of flowering plants in the family Rubiaceae but is no longer recognized. In 2005, it was sunk into synonymy with Vangueria, based on a phylogenetic study of DNA sequences.
