Turnera is a genus of flowering plants in the passionflower family, Passifloraceae. It contains more than 100 species native to tropical and subtropical America. The name honours English naturalist William Turner (1508–1568). It was previously placed in the family Turneraceae.
Adenoa is a monotypic genus of flowering plants belonging to Turneroideae (Passifloraceae).
Afroqueta is a genus of flowering plants belonging to Turneroideae (Passifloraceae). It is a monotypic group, consisting of Afroqueta capensis(Harv.) Thulin & Razafim.
Piriqueta is a genus of flowering plants belonging to Turneroideae (Passifloraceae).
Oxossia is a genus of flowering plants in the subfamily Turneroideae (Passifloraceae) consisting of 15 species. This genus was recently defined in 2019 after a phylogenetic analysis of Turnera justified the creation of the genus. The genus is characterized by its stipules, small flowers, congested inflorescences, "hairy" stamen and style, and the attachment of stamen to the floral tube. All members of the genus are heterostylous with the exception of O. dasystyla. The genus can be divided into two morphological groups: those with white petals and those with yellow pink or red petals.
Arboa madagascariensis is a woody plant with yellow flowers native to Madagascar.
Oxossia albicans is a subshrub in the genus Oxossia. It is native to the wet tropics of eastern Brazil, specifically the Atlantic forest. It is 40 - 80 cm tall and has yellow heterostylous flowers.
Oxossia annularis is a shrub of Oxossia Turneroideae (Passifloraceae) native to eastern Brazil. It is found in Caatinga, Cerrado, and Atlantic Forest. O. annularis has 2–10 mm long petioles, rigid elliptical, ovate, or obovate leaves with serrated margins and heterostylous flowers.
Oxossia calyptrocarpa, a member of Turneroideae (Passifloraceae), is a shrub native to the wet tropics of eastern Brazil. It is found in the Caatinga, Cerrado, and Atlantic forest. It is 0.2-2.5 meter tall with highly plasticitic leaves and white to lilac flowers. It is a heterostylous species.
Oxossia capitata is a shrub native to the wet tropics of southern Brazil. It was previously classified as Turnera, however, recent phylogenetic analyses suggested the species should be placed in Oxossia.O. capitata has heterostylous white pointed flowers.
Oxossia hatschbachii is a species of shrub in the genus Oxossia (Passifloraceae). It is native to the Atlantic Rainforest near Espírito Santo, Brazil. O. hatchbachii has heterostylous racemose flowers, ranging in color from white to red.
Oxossia hebepetala is shrub in the genus Oxossia (Passifloraceae). It is native to the Caatinga of Bahria and Piauí, Brazil.
Oxossia maracasana is a shrub in the genus Oxossia (Passifloraceae). It is native the Caatinga regions and Atlantic forest near Bahia, Brazil. It has white heterostylous flowers.
Oxossia marmorata is a shrub in the genus Oxossia (Passifloraceae). It is native to the Atlantic Rainforest of Brazil. It can be distinguished from other members of the genus by its yellow flowers. Similar to other members of Oxossia, O. marmorata has distylous flowers.
Oxossia pernambucensis is a shrub in the genus Oxossia (Passifloraceae). It is native to the Atlantic Rainforest of Brazil. The species is currently represented by a single population and thus is currently classified as critically endangered.
Oxossia princeps is a subshrub in the genus Oxossia (Passifloraceae). It is native to the savanna of Minas Gerais, Brazil. It is considered "rare", but its conservation classification is currently unknown.
Oxossia rubrobracteata is a shrub in the genus Oxossia (Passifloraceae). It is native to the Atlantic Rainforest of Brazil.
Oxossia schomburgkiana is a shrub in the genus Oxossia (Passifloraceae). It is native to the Amazon Rainforest of Brazil.
Oxossia spicata is a shrub in the genus Oxossia (Passifloraceae). It is native to the Atlantic Rainforest of Espírito Santo, Brazil. The species is known from three different populations, however, additional field work is needed to determine the conservation status of O. spicata.
Oxossia waltherioides is a subshrub in the genus Oxossia (Passifloraceae). It is native to the Amazon Rainforest of Roraima, Brazil.
