Bertiera is a genus of flowering plants in the family Rubiaceae. It comprises 57 species with most known from tropical Africa, five known from various Indian Ocean islands and five found in the tropics of the Americas.
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.
Keetia is a genus of flowering plants in the family Rubiaceae. It consists of climbers or scrambling shrubs, rarely small trees.
Pavetta is a genus of flowering plants in the family Rubiaceae. It comprises about 360 species of trees, evergreen shrubs and sub-shrubs. It is found in woodlands, grasslands and thickets in sub-tropical and tropical Africa and Asia. The plants are cultivated for their simple but variable leaves, usually opposite but also occur in triple whorls. The leaves are often membranous with dark bacterial nodules. Pavetta has small, white, tubular flowers, sometimes salviform or funnel-shaped with 4 spreading petal lobes. The flowers are carried on terminal corymbs or cymes.
Psydrax is a genus of flowering plants in the family Rubiaceae. It consists of trees, shrubs, and a few lianas in the paleotropics.
Rothmannia is a genus of flowering plants in the family Rubiaceae. It was described in 1776 and is named for Göran Rothman (1739–1778) by Thunberg – both were pupils of Linnaeus.
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.
Sericanthe is a genus of flowering plants in the family Rubiaceae. It is found in tropical and subtropical Africa. The genus was described by Elmar Robbrecht in 1978 based on the species in Neorosea, except for the type species, Neorosea jasminiflora, which went to Tricalysia. Bacterial leaf nodules are found in most of the species and the endophytic bacteria have been identified as Burkholderia.
Tricalysia is a genus of flowering plants in the family Rubiaceae. The genus is found in tropical and southern Africa and on the islands in the Western Indian Ocean.
Aulacocalyx is a genus of flowering plants in the family Rubiaceae. It is found in tropical Africa.
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.
Craterispermum is a genus of flowering plants in the family Rubiaceae. It contains 16 species that occur in tropical Africa and Seychelles. It is the only genus in the tribe Craterispermeae, of which the divergence time is estimated at 34.8 million years ago.
Empogona is a genus of flowering plants in the family Rubiaceae. The genus is found in tropical and southern Africa and Madagascar. It was for a time deemed a subgenus or section of Tricalysia.
Chassalia is a genus of flowering plants in the family Rubiaceae. The genus is found from tropical Africa to (sub)tropical Asia.
Gardenieae is a tribe of flowering plants in the family Rubiaceae and contains about 586 species in 53 genera.
