Julian Alfred Steyermark was a Venezuelan American botanist. His focus was on New World vegetation, and he specialized in the family Rubiaceae.
Todaroa is a monotypic genus of flowering plants belonging to the family Apiaceae. It just contains one known species, Todaroa aurea.
Kerriochloa is a genus of Southeast Asian plants in the grass family. The only known species is Kerriochloa siamensis, native to Thailand and Vietnam.
Xatardia is a monotypic genus of flowering plants belonging to the family Apiaceae. It only contains one known species, Xatardia scabra.
Tourrettia is a monotypic genus of flowering plants belonging to the family Bignoniaceae. It only contains one known species, Tourrettia lappacea(L'Hér.) Willd. The genus of Tourrettia has 2 known synonyms, DombeyaL'Hér. and MedicaCothen. It is also in Tribe Tourrettieae.
Naudinia is a monotypic genus of flowering plants belonging to the family Rutaceae. It only contains one known species, Naudinia amabilis Planch. & Linden
Pauldopia is a monotypic genus of flowering plants belonging to the family Bignoniaceae. It only contains one known species, Pauldopia ghonta(Buch.-Ham. ex G.Don) Steenis
Sargentodoxa is a monotypic genus of flowering plants belonging to the family Lardizabalaceae. It only contains one known species, Sargentodoxa cuneata(Oliv.) Rehder & E.H.Wilson.
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
Petelotiella is a monotypic genus of flowering plants belonging to the family Urticaceae. It contains just one species, Petelotiella tonkinensis.
Kerriothyrsus is a monotypic genus of flowering plants belonging to the family Melastomataceae. The only species is Kerriothyrsus tetrandrus(Nayar) C.Hansen
Leretia is a monotypic genus of flowering plants belonging to the family Icacinaceae. The only species is Leretia cordataVell.
Letestuella is a monotypic genus of flowering plants belonging to the family Podostemaceae. The only species is Letestuella tisserantiiG.Taylor
Lourtella is a monotypic genus of flowering plants belonging to the family Lythraceae. The only species is Lourtella resinosaS.A.Graham, Baas & Tobe.
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.
Neeopsis is a monotypic genus of flowering plants belonging to the family Nyctaginaceae. The only species is Neeopsis flavifolia.
Neothorelia is a monotypic genus of flowering plants belonging to the family Capparaceae. The only species is Neothorelia laoticaGagnep..
Nepsera is a monotypic genus of flowering plants belonging to the family Melastomataceae. The only species is Nepsera aquatica.
Nivellea is a monotypic genus of flowering plants belonging to the family Asteraceae. The only species is Nivellea nivellei.
Pierranthus is a monotypic genus of flowering plants belonging to the family Linderniaceae. The only known species is Pierranthus capitatus(Bonati) Bonati.
