Acanthaceae is a family of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes. Only a few species are distributed in temperate regions. The four main centres of distribution are Indonesia and Malaysia, Africa, Brazil, and Central America. Representatives of the family can be found in nearly every habitat, including dense or open forests, scrublands, wet fields and valleys, sea coast and marine areas, swamps, and mangrove forests.
Justicia is a genus of flowering plants in the family Acanthaceae. It is the largest genus within the family, with over 900 accepted species. They are native to tropical to warm temperate regions of the Americas, India, and Africa. The genus serves as host to many butterfly species, such as Anartia fatima. Common names include water-willow and shrimp plant, the latter from the inflorescences, which resemble a shrimp in some species. The generic name honours Scottish horticulturist James Justice (1698–1763). They are closely related to Pachystachys.
Morinda is a genus of flowering plants in the madder family, Rubiaceae. The generic name is derived from the Latin words morus "mulberry", from the appearance of the fruits, and indica, meaning "of India".
Gouania is a genus of flowering plants in the family Rhamnaceae. The 50 to 70 species it contains are native to tropical and subtropical regions of the world, including Africa, Madagascar, the Indian Ocean islands, southern Asia, the Americas and Hawaii. They are shrubs or lianas. A revision of the species in Madagascar and the other western Indian Ocean islands is in preparation, where the genus has an important centre of diversity. The work will recognise several new species.
Ruellia is a genus of flowering plants commonly known as ruellias or wild petunias. They are not closely related to petunias (Petunia) although both genera belong to the same euasterid clade. The genus was named in honor of Jean Ruelle (1474–1537), herbalist and physician to Francis I of France and translator of several works of Dioscorides.
Dicliptera is a genus of flowering plants in the bear's breeches family, Acanthaceae. It includes 223 species native to the tropics and subtropics worldwide. Well-known synonyms include Peristrophe and Dactylostegium.
Anisacanthus is a genus of flowering plants in the bear's breeches family, Acanthaceae. The generic name is derived from the Greek words ανισος (anisos), meaning "unequal," and ακανθος (acanthos), meaning "thorn." Members of the genus are native to tropical and subtropical regions of the Americas. They are commonly known as desert honeysuckles, though this term is shared with the genus Ancistranthus, and is something of a misnomer as true honeysuckles belong to the family Caprifoliaceae. Anisacanthus species are sometimes cultivated for use in xeriscaping.
Poikilacanthus is a genus of flowering plants in the family Acanthaceae. It includes 13 species native to the tropical Americas, ranging from central Mexico to northern Argentina.
Stenandrium is a genus of flowering plants in the family Acanthaceae native to the Americas, with 50 species of perennial herbs ranging from the southern United States to northern Argentina and central Chile.
Carlowrightia is a genus of flowering plants in the bear's breeches family, Acanthaceae. Members of the genus, commonly known as wrightworts, are mainly small shrubs bearing inflorescences of lily-like flowers. They are native to the Americas, ranging from the southwestern United States through Mexico and Central America, and in Ecuador. Many species are native to western North America. The genus was named for the American botanist Charles Wright.
Hamelia is a genus of flowering plants in the coffee family, Rubiaceae. The name honors French botanist Henri-Louis Duhamel du Monceau (1700–1782).
Pseuderanthemum is a genus of plants in family Acanthaceae with a pantropical distribution.
Stenostephanus is a genus of plants in the family Acanthaceae. It includes 94 species native to the tropical Americas, ranging from northeastern Mexico to Bolivia and southeastern Brazil.
Schaefferia is a genus of flowering shrubs and small trees in the family Celastraceae. The generic name honours German mycologist and clergyman Jacob Christian Schäffer (1718–1790). Members of the genus are found in the Neotropics. The plants are dioecious, with flowers that are unisexual due to abortion. The flowers are usually clustered in the leaf axil, although they are solitary in some species. The calyx of the flowers has four lobes, and the corolla consists of four petals. The ovary consists of two locules; each locule contains a single ovule which develops into a single seed. The fruit is a drupe.
Piscidia is a genus of flowering plants in subfamily Faboideae of the family Fabaceae. It includes seven species of trees, and rarely shrubs, native to the tropical Americas, ranging from northern Mexico and Florida through Central America and the Caribbean to Venezuela and Peru. Typical habitats include seasonally-dry tropical forest, woodland, and bushland, often on rocky hills, with some species restricted to limestone substrates.
Metopium or poisonwood is a genus of flowering plants in the sumac family, Anacardiaceae. They are dioecious trees with poisonous sap that can induce contact dermatitis.
Elaeodendron is a genus of flowering plants in the staff vine family, Celastraceae. It includes 39 species native to the tropics of the Americas, sub-Saharan Africa, Asia, Australia, and the South Pacific.
Dyschoriste is a genus of flowering plants in the family Acanthaceae. It includes 98 species native to the tropics and subtropics of the Americas, sub-Saharan Africa, and southern Asia. Members of the genus are commonly known as snakeherb.
Jacquemontia is a genus of plants in the morning glory family Convolvulaceae. Species in this genus are commonly known as clustervine.
