Vernonia is a genus of about 350 species of forbs and shrubs in the family Asteraceae. Some species are known as ironweed. Some species are edible and of economic value. They are known for having intense purple flowers. There have been numerous distinct subgenera and subsections named in this genus, and some botanists have divided the genus into several distinct genera. For instance, the Flora of North America recognizes only about twenty species in Vernoniasensu stricto, seventeen of which are in North America north of Mexico, with the others being found in South America.
Psychotria is a genus of flowering plants in the family Rubiaceae. It contains 1,582 species and is therefore one of the largest genera of flowering plants. The genus has a pantropical distribution and members of the genus are small understorey trees in tropical forests. Some species are endangered or facing extinction due to deforestation, especially species of central Africa and the Pacific.
Anthyllis vulneraria, the common kidneyvetch, kidney vetch or woundwort is a medicinal plant native to Europe. The name vulneraria means "wound healer".
Whitfieldia is a genus of flowering plants in the family Acanthaceae. It includes 13 species of erect or scrambling shrubs native to tropical Africa. The greatest species diversity is in the Guineo-Congolian rainforests of western and central Africa.
Vernonieae is a tribe of about 1300 species of plants in the aster family. They are mostly found in the tropics and warmer temperate areas, both in the Americas and the Old World. They are mostly herbaceous plants or shrubs, although there is at least one tree species, Vernonia arborea.
Vernonia amygdalina, a member of the daisy family, is a small shrub that grows in tropical Africa. V. amygdalina typically grows to a height of 2–5 m (6.6–16.4 ft). The leaves are elliptical and up to 20 cm (7.9 in) long. Its bark is rough.
Vernonia djalonensis is a critically endangered species of plants in the family Asteraceae. It is native to the West African country of Guinea.
Vernonia acaulis is a species of perennial plant in the family Asteraceae. It is native to the U.S.
Vernonia amoena is a species of annual, flowering plant in the family Asteraceae. It is endemic to Zambia and Zimbabwe. It grows up to 110 cm (43 in) tall. The leaves are sessile, growing 4 to 15 cm long and 1 to 6 cm across. The flowers may be blueish purple or white.
Vernonia flaccidifolia is a species of flowering plant in the family Asteraceae. It is native to Georgia, Tennessee, and Alabama.
Vernonia schweinfurthii is a species of plant in the family Asteraceae. It is native to Angola, Burundi, Cameroon, Central African Repu, Ivory Coast, Malawi, Nigeria, Rwanda, Sudan, Zambia. One subspecies is recognized: Vernonia schweinfurthii var. bukamaensis.
Vernonia angustifolia is a species of flowering plant in the family Asteraceae, native to the southeastern United States. It was first described by André Michaux in 1803.
Brenandendron is a genus of plants in the family Asteraceae, native to tropical Africa. The genus is named for the British botanist John Patrick Micklethwait Brenan and its species were formerly placed in the genus Vernonia.
Brenandendron frondosum is a plant in the family Asteraceae, native to tropical Africa.
Cabobanthus is a genus of plants in the family Asteraceae, native to tropical Africa. Its species were formerly placed in the genus Vernonia.
Orbivestus is a genus of shrubs in the family Asteraceae, native to tropical Africa, the Arabian Peninsula and the Indian subcontinent. Its species were formerly placed in the genus Vernonia.
Orbivestus bamendae is a plant in the family Asteraceae.
Hoffmannanthus is a monotypic genus of flowering plants in the Asteraceae. There is only one known species, Hoffmannanthus abbotianus(O.Hoffm.) H.Rob., S.C.Keeley & Skvarla Its native range is Uganda and southern Tropical Africa. It is found in the countries of Angola, Kenya, Tanzania, Uganda, Zambia and Zaïre.
Vernonia fasciculata, the smooth ironweed or common ironweed, or prairie ironweed is a species of perennial plant in the family Asteraceae. It is native to Manitoba in Canada and the north-central U.S.A.
