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.
Julian Alfred Steyermark was a Venezuelan American botanist. His focus was on New World vegetation, and he specialized in the family Rubiaceae.
Steyermarkochloa is a genus of plants in the grass family. The only known species is Steyermarkochloa angustifolia(Spreng.) Judz., which is native to Colombia (Guainía), Venezuela (Amazonas), and Brazil (Amazonas).
Vailia is a monotypic genus of flowering plants belonging to the family Apocynaceae. It just contains one species, Vailia mucronataRusby
Schenckochloa is a monotypic genus of flowering plants belonging to the family Poaceae. It only contains one known species, Schenckochloa barbata(Hack.) J.J.Ortíz
Vanzijlia is a genus of flowering plants belonging to the family Aizoaceae. It only contains one known species, Vanzijlia annulata.
Xatardia is a monotypic genus of flowering plants belonging to the family Apiaceae. It only contains one known species, Xatardia scabra.
Thepparatia is a monotypic genus of flowering plants belonging to the family Malvaceae. It only contains one known species, the liana Thepparatia scandens.
Komaroviopsis is a monotypic genus of flowering plants belonging to the family Apiaceae. It contains only one species, Komaroviopsis anisoptera, native to Uzbekistan in Central Asia.
Ledebouriella is a monotypic genus of flowering plants belonging to the family Apiaceae. It only contains one known species, Ledebouriella multiflora(Ledeb.) H.Wolff.
Neobrittonia is a monotypic genus of flowering plants belonging to the family Malvaceae. It only contains one known species, Neobrittonia acerifolia
Savignya is a monotypic genus of flowering plants belonging to the family Brassicaceae. It only contains one known species, Savignya parviflora(Delile) Webb
Pisoniella is a monotypic genus of flowering plants belonging to the family Nyctaginaceae. It only contains one known species, Pisoniella arborescens(Lag. & Rodr.) Standl.
Oldfeltia is a genus of flowering plants belonging to the family Asteraceae. It contains only one known species, Oldfeltia polyphlebia.
Stewartiella is a monotypic genus of flowering plants belonging to the family Apiaceae. According to Kew; it only contains one known species, Stewartiella crucifolia(Gilli) Hedge & Lamond
Sebastiano-schaueria is a monotypic genus of flowering plants belonging to the family Acanthaceae. The only known species is Sebastiano-schaueria oblongata.
Purdieanthus is a monotypic genus of flowering plants belonging to the family Gentianaceae. The only known species is Purdieanthus pulcher.
Nectouxia is a monotypic genus of flowering plants belonging to the family Solanaceae. The only species is Nectouxia formosa. It is in the Solanoideae subfamily and in Subtribe Salpichroinae, which is a subtribe of Physaleae.
Peterodendron is a monotypic genus of flowering plants belonging to the family Achariaceae. The only species is Peterodendron ovatum.
Krubera peregrina is a species of plants in the family Apiaceae. It is the only species in the genus Krubera.
