Dicliptera is a large genus of flowering plants in the family Acanthaceae, the bear's breeches family, placed within the order Lamiales. The genus encompasses approximately 223 species distributed across the tropics and subtropics of the world, with representatives found in Africa, Asia, Australia, and the Americas.
Members of Dicliptera are typically herbaceous or shrubby plants bearing opposite leaves and small, often tubular flowers that are characteristically subtended by prominent bracts. The genus is notable for its ecological interactions: at least one species, Dicliptera suberecta (Uruguayan firecracker), is a popular garden ornamental, and several species serve as larval host plants for butterflies, including Anartia fatima in the Americas.
Within the family Acanthaceae, Dicliptera is closely related to genera such as Justicia and Ruellia. It has historically absorbed several segregate genera: Peristrophe and Dactylostegium are recognised synonyms, and Dactylostegium is sometimes still treated as included within Dicliptera depending on the taxonomic treatment followed. The genus was described in the 19th century and today sits firmly within the Acanthaceae as an accepted genus under the GBIF backbone taxonomy.
Distribution
Dicliptera is native to the tropics and subtropics worldwide, with species distributed across Africa, Asia, Australia, and the Americas. The genus is most diverse in tropical regions and its approximately 223 species span a broad latitudinal range from lowland rainforest margins to montane scrub.
Ecology
At least one species in the genus is documented as a host plant for the butterfly Anartia fatima (the Fatima's butterfly), indicating ecological roles as larval food plants in tropical communities.
Taxonomy Notes
Dicliptera has historically included or been synonymised with Peristrophe and Dactylostegium, both of which are listed as well-known synonyms. Dactylostegium is sometimes still treated as falling within Dicliptera. The genus sits in the family Acanthaceae, order Lamiales, and is accepted in the GBIF backbone taxonomy (key 321165114). An additional species, Dicliptera srisailamica, was described in 2024 but had not been included in Plants of the World Online as of November 2024.
