Justicia is a genus of flowering plants in the family Acanthaceae. It is the largest genus within the family, encompassing around 700 species with hundreds more as yet unresolved. 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.
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.
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.
Anisotes is a genus of Afrotropical plants in the family Acanthaceae. The genus is morphologically similar to Metarungia, from which it differs mainly in the dehiscence of the fruit capsule, and the nature of the placenta. Placentas remain attached to the inner surface of fruit capsules in Anisotes.
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.
Jerzy Rzedowski Rotter was a Polish-born Mexican botanist, whose focus was on Mexican floristics, taxonomy, and ecology.
Julian Alfred Steyermark was a Venezuelan American botanist. His focus was on New World vegetation, and he specialized in the family Rubiaceae.
Neesiochloa is a genus of Brazilian plants in the grass family. The only known species is Neesiochloa barbata. It is native to eastern Brazil.
Zandera is a genus of annual plants in the family Asteraceae.
Bonetiella is a monotypic genus of shrubs in the subfamily Anacardioideae of the cashew and sumac family Anacardiaceae. It contains the single species Bonetiella anomala, which is endemic to northern and central Mexico.
Yeatesia is a putative genus of flowering plants in the family Acanthaceae, found in northeast Mexico and the southeast United States, from Texas to Florida. Each of its species grows in very different habitats; Yeatesia mabryi is found in hardwood forests in Mexico, Y. platystegia prefers semiarid scrublands in Mexico and Texas, and Y. viridiflora grows in wetter forest bluffs and along water courses in US Gulf Coast states. Molecular evidence shows that Yeatesia is not a monophyletic genus.
Velascoa is a monotypic genus of flowering plants belonging to the family Crossosomataceae. It only contains one known species, Velascoa recondita.
Uroskinnera is a genus of flowering plants belonging to the family Plantaginaceae. It is also in Tribe Cheloneae.
Henrya is a genus of flowering plants belonging to the family Acanthaceae.
Hoverdenia is a monotypic genus of flowering plants belonging to the family Acanthaceae. It only contains one species, Hoverdenia speciosa.
Lamourouxia is a genus of flowering plants belonging to the family Orobanchaceae.
Neokochia is a genus of flowering plants belonging to the family Amaranthaceae.
Ruelliopsis is a monotypic genus of flowering plants belonging to the family Acanthaceae. It only contains one known species, Ruelliopsis setosa(Nees) C.B.Clarke
Kadenicarpus is a genus of flowering plants belonging to the family Cactaceae. It is native to eastern Mexico. It has been synonymized with Turbinicarpus but molecular phylogenetic studies have supported its monophyly and separation from that genus.
Neesenbeckia is a monotypic genus of flowering plants belonging to the family Cyperaceae. The only species is Neesenbeckia punctoria(Vahl) Levyns.
