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.
The genus Helichrysum consists of an estimated 600 species of flowering plants in the sunflower family (Asteraceae). The type species is Helichrysum orientale. They often go by the names everlasting, immortelle, and strawflower. The name is derived from the Ancient Greek words ἥλιος and χρῡσός.
The genus of the myrrhs, Commiphora, is the most species-rich genus of flowering plants in the frankincense and myrrh family, Burseraceae. The genus contains approximately 190 species of shrubs and trees, which are distributed throughout the (sub-) tropical regions of Africa, the western Indian Ocean islands, the Arabian Peninsula, India, and South America. The genus is drought-tolerant and common throughout the xerophytic scrub, seasonally dry tropical forests, and woodlands of these regions.
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.
Hygrophila, commonly known as swampweeds, is a genus of flowering plants in the acanthus family, Acanthaceae. There are about 80 to 100 species, of which many are aquatic plants. The genus is distributed across the tropical and subtropical world. It is one of only two genera in its family that contains aquatic plants, the other being Justicia. The genus is treated in the tribe Hygrophileae, which is noted as being in need of revision at the genus level, meaning the current taxonomic boundaries of Hygrophila are likely to change in the future.
Cyanotis is a genus of mainly perennial plants in the family Commelinaceae, first described in 1825. It is native to Africa, southern Asia, and northern Australia.
Blepharis is a genus of plant in family Acanthaceae. It contains around 128 species found in seasonally dry to arid habitats from Africa through Arabia to Southeast Asia. In section Acanthodium, there are 13–15 species that use the C4 carbon fixation pathway. Phylogenetic analysis suggests that this pathway evolved up to three times independently in the genus over the last five million years.
Sclerochiton is a genus of flowering plants in the family Acanthaceae. It includes 18 species native to tropical and southern Africa.
Petalidium coccineum is a species of a fast-growing shrub that bears red flowers and smooth, white bark. This shrub may grow up to 2.5 m in height. It is native to northwestern Namibia, particularly the dry savannah of Kaokoveld and Owamboland. Flowers occur in short racemes up to 40 mm long, borne in the leaf axils. Like other species in its genus, Petalidium coccineum bears hygroscopic fruit capsules which, when moist, release two flat seeds explosively.
Acanthopsis is a genus of flowering plants in the family Acanthaceae. It includes 20 species native to Namibia and the Cape Provinces of South Africa.
Coleus neochilus, synonym Plectranthus neochilus, which is colloquially known as lobster bush, fly bush or mosquito bush, is a perennial ground cover with highly fragrant, partially scalloped, ovate leaves and purple blue inflorescent spikes.
Duosperma is a genus of flowering plants belonging to the family Acanthaceae.
Phaulopsis is a genus of flowering plants belonging to the family Acanthaceae.
Pogonospermum is a genus of flowering plants in the family Acanthaceae. It includes 34 species native to sub-Saharan Africa.
