I. M. Johnston, was a United States botanist. He studied at Pomona College in Claremont, California and at Harvard University. His plant collections are housed in the Rancho Santa Ana Botanic Garden, in Claremont, and also in the Gray Herbarium of Harvard University.
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).
Ridleyella is a monotypic genus of flowering plants from the orchid family, Orchidaceae. The sole species is Ridleyella paniculata, which is endemic to New Guinea.
Joachim Godske von Moltke was the Prime Minister of Denmark from 1814 to 1818. He was also father of Prime Minister Adam Wilhelm Moltke and the son of Danish diplomat Adam Gottlob Moltke.
Marshall Conring Johnston is an American botanist who made several explorations in Mexico and specialized in plants in the family Gesneriaceae.
Balbisia is a genus of flowering plants belonging to the family Francoaceae. It is also in the Vivianiaceae subfamily.
Viscainoa is a genus of flowering plants belonging to the family Zygophyllaceae. It is also in the subfamily of Morkillioideae.
Ivania is a genus of flowering plants belonging to the family Brassicaceae.
Johnstonella is a genus of flowering plants belonging to the family Boraginaceae.
Ianhedgea is a monotypic genus of flowering plants belonging to the family Brassicaceae. The only species is Ianhedgea minutiflora.
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.
Lenzia is a monotypic genus of flowering plants belonging to the family Montiaceae. It only contains one known species, Lenzia chamaepitysPhil.
Mairetis is a monotypic genus of flowering plants belonging to the family Boraginaceae. It only contains one known species, Mairetis microsperma(Boiss.) I.M.Johnst.
Marcania is a monotypic genus of flowering plants belonging to the family Acanthaceae. It only contains one known species, Marcania grandifloraJ.B.Imlay
Moritzia is a genus of flowering plants belonging to the family Boraginaceae.
Pisoniella is a monotypic genus of flowering plants belonging to the family Nyctaginaceae. It only contains one known species, Pisoniella arborescens(Lag. & Rodr.) Standl.
Eokochia is a monotypic genus of flowering plants belonging to the family Amaranthaceae. The only species is Eokochia saxicola.
Kerriothyrsus is a monotypic genus of flowering plants belonging to the family Melastomataceae. The only species is Kerriothyrsus tetrandrus(Nayar) C.Hansen
Moltkiopsis is a monotypic genus of flowering plants belonging to the family Boraginaceae. The only species is Moltkiopsis ciliata.
Perryodendron is a monotypic genus of flowering plants belonging to the family Rutaceae. The only known species is Perryodendron parviflorum.
