Ceiba is a genus of trees in the family Malvaceae, native to tropical and subtropical areas of the Americas and tropical West Africa. Some species can grow to 70 m (230 ft) tall or more, with a straight, largely branchless trunk that culminates in a huge, spreading canopy, and buttress roots that can be taller than a grown person. The best-known, and most widely cultivated, species is Kapok, Ceiba pentandra, one of several trees known as kapok. Ceiba is a word from the Taíno language meaning "boat" because Taínos use the wood to build their dugout canoes.
Psidium is a genus of trees and shrubs in the family Myrtaceae. It is native to warmer parts of the Western Hemisphere.
Rauvolfia is a genus of evergreen trees and shrubs, commonly known as devil peppers, in the family Apocynaceae. The genus is named to honor Leonhard Rauwolf. The genus can mainly be found in tropical regions of Africa, Asia, Latin America, and various oceanic islands.
Coccocypselum is a genus of flowering plants in the family Rubiaceae. It is native to Mexico, Central America, the West Indies and South America. All species of the genus Coccocypselum are herbaceous with fleshy, blue or purple fruits, and 4-petaled flowers.
Cephalanthus is a genus of flowering plants in the family Rubiaceae. There are about six species that are commonly known as buttonbush.
Pluchea is a genus of flowering plants in the tribe Inuleae within the family Asteraceae. Members of this genus might be known as camphorweeds, plucheas, or less uniquely fleabanes. Some, such as P. carolinensis and P. odorata, are called sourbushes. There are plants of many forms, from annual and perennial herbs to shrubs and trees, and there is variation in the morphology of leaves, flowers, and fruits.
Anthospermum is a genus of flowering plants in the family Rubiaceae. It is found in Tropical and Southern Africa, Madagascar and in southwestern Arabian Peninsula.
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.
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.
Spermacoce or false buttonweed is a genus of flowering plants in the family Rubiaceae. It comprises about 275 species found throughout the tropics and subtropics. Its highest diversity is found in the Americas, followed by Africa, Australia and Asia.
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.
Cuviera is a genus of flowering plants in the family Rubiaceae native to tropical Africa. It was originally described by Augustin Pyramus de Candolle in 1807 and is named after the French naturalist Georges Cuvier.
Amaioua is a genus of flowering plants in the family Rubiaceae. It was first described by Jean Baptiste Aublet in 1775. The genus is native to tropical America from southern Mexico to Brazil, including Cuba and Trinidad.
Chomelia is a genus of flowering plants in the family Rubiaceae. It is native to Mexico, Central America, the West Indies, and much of South America as far south as Argentina.
Cremaspora is a genus of flowering plants in the family Rubiaceae. It is the only genus in the tribe Cremasporeae. It was described by George Bentham in 1849. The genus is widespread across much of sub-Saharan Africa from Senegal to Tanzania and south to Mozambique and Zimbabwe, in addition to Madagascar, Comoros, and Cape Verde. There are, however, only two currently recognized species.
Calycophyllum is a genus of flowering plants in the family Rubiaceae. It was described by Augustin Pyramus de Candolle in 1830. The genus is found from Mexico, Central America, South America and the West Indies.
Diodia virginiana is a plant species in the Rubiaceae, common name Virginia buttonweed. It is a spreading, matted perennial with opposite leaves, often mottled because of a virus that attacks the foliage. Flowers are white, cross-shaped with 4 petals. Fruits are green, often floating on water. The species can become a nuisance weed, hard to eradicate because of underground parts that remain behind when you try to pull up the plant.
Diodella is a genus of flowering plants in the family Rubiaceae. The genus has a wide distribution range and is found from the USA to tropical America and in tropical Africa.
Spermacoce alata, the winged false buttonweed, is a species of plant in the Rubiaceae. It is widespread across the warmer parts of the Western Hemisphere and naturalized in many other parts of the world.
Spermacoce glabra, smooth false buttonweed, is a New World species of plants in the coffee family.
