Coffea is a genus of flowering plants in the family Rubiaceae. Coffea species are shrubs or small trees native to tropical and southern Africa and tropical Asia. The seeds of some species, called coffee beans, are used to flavor various beverages and products. The fruits, like the seeds, contain a large amount of caffeine, and have a distinct sweet taste and are often juiced. The plant ranks as one of the world's most valuable and widely traded commodity crops and is an important export product of several countries, including those in Central and South America, the Caribbean and Africa.
Bullockia is a genus of flowering plants in the family Rubiaceae. It was originally described as a subgenus of Canthium. The genus is distributed in eastern and southern Africa from Ethiopia to Transvaal, as well as Madagascar in bushland, woodland, savannas, and dry, deciduous forests.
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.
Multidentia is a genus of flowering plants in the family Rubiaceae.
Oxyanthus is a genus of plant in family Rubiaceae. It contains the following species :
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.
Vanguerieae is a tribe of flowering plants in the family Rubiaceae and contains about 655 species in 30 genera. It is one of the most species-rich groups within the family and it is distributed all over the Paleotropics.
Afrocanthium is a genus of flowering plants in the family Rubiaceae. It consists of deciduous, unarmed trees, and shrubs. They are native to East Africa, from Sudan and Ethiopia to South Africa.
Psydrax oleifolia, commonly known as wild lemon or brush myrtle, is a species of shrub or small tree in the family Rubiaceae. It is endemic to eastern and inland Australia,.
Phallaria was a genus of flowering plants in the family Rubiaceae but is no longer recognized. It has been sunk into synonymy with Psydrax. It was originally described by Heinrich Christian Friedrich Schumacher and Peter Thonning in 1827 to accommodate two West African species, P. horizontalis and P. spinosa.
Mitrastigma was a monotypic genus of flowering plants in the family Rubiaceae but is no longer recognized. It was originally described by William Henry Harvey in 1842. The genus was monotypic, containing only the one species Mitrastigma lucidum. It was sunk into synonymy with the genus Psydrax, where Mitrastigma lucidum now appears as the species Psydrax obovata Bridson.
Aulacocalyx is a genus of flowering plants in the family Rubiaceae. It is found in tropical Africa.
Coffea racemosa, also known as racemosa coffee and Inhambane coffee, is a species of flowering plant in the family Rubiaceae. It has naturally low levels of caffeine, less than half of that found in Coffea arabica, and a quarter of that in Robusta coffee. It is endemic to the coastal forest belt between northern KwaZulu-Natal in South Africa and Zimbabwe, found in an area less than 150 km2 (58 sq mi) in size. It was widely cultivated by the Portuguese during the 1960-1970s in Mozambique, currently there are only two plantations at Ibo Island and in Hluhluwe, which remain.
Diane Mary Bridson is a British botanist.
Nichallea is a monotypic genus of flowering plants belonging to the family Rubiaceae. It only contains one species, Nichallea soyauxii(Hiern) Bridson
