Oncidium, abbreviated as Onc. in the horticultural trade, is a genus that contains about 330 species of orchids from the subtribe Oncidiinae of the orchid family (Orchidaceae). As presently conceived, it is distributed across much of South America, Central America, Mexico and the West Indies, with one species (O. ensatum) extending into Florida. Common names for plants in this genus include dancing-lady orchid and golden shower orchid.
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.
Tragia is a genus of flowering plants in the spurge family, Euphorbiaceae. It is widespread across North and South America, Africa, the Arabian Peninsula, the Indian Subcontinent, northern Australia, and to various islands in the Caribbean and in the Indian Ocean.
Diodia is a genus of flowering plants in the family Rubiaceae. It was described by Carl Linnaeus in 1753. The genus is found from southern and eastern United States, South America, Central America, Mexico, the West Indies and tropical Africa.
Harrisia is a genus of night blooming cacti.
Triglochin is a plant genus in the family Juncaginaceae described by Carl Linnaeus in 1753. It includes 25 known species. It is very nearly cosmopolitan in distribution, with species on every continent except Antarctica. North America has four accepted species, two of which can also be found in Europe: Triglochin palustris and Triglochin maritima. Australia has many more.
Soliva is a genus of South American plants in the sunflower family. Burrweed is a common name for some species in this genus.
Zephyranthes candida, with common names that include autumn zephyrlily, white windflower, white rain lily, and Peruvian swamp lily, is a species of rain lily native to South America including Argentina, Uruguay, Paraguay, and Brazil. The species is widely cultivated as an ornamental and reportedly naturalized in many places.
Ornithopus, the bird's-foot, is a genus of flowering plants in the legume family, Fabaceae. It includes six species and one natural hybrid native to Europe, Macaronesia, the eastern Mediterranean, northwest Africa, and Iran, and from southern Brazil to northeastern Argentina in South America.
Stigmaphyllon is a genus in the Malpighiaceae, a family of about 75 genera of flowering plants in the order Malpighiales. Amazonvine is a common name for species in this genus.
Stromanthe is a genus of flowering plants in the family Marantaceae, native to the tropical portions of the Americas from Mexico to Trinidad to northern Argentina.
Verbena bonariensis, the purpletop vervain, clustertop vervain, Argentinian vervain, tall verbena or pretty verbena, is a member of the verbena family cultivated as a flowering annual or herbaceous perennial plant. In USA horticulture, it is also known by the ambiguous names purpletop and South American vervain. For the misapplication "Brazilian verbena" see below.
Polypogon is a nearly cosmopolitan genus of plants in the grass family, commonly known beard grass or rabbitsfoot grass.
Spermacoce or false buttonweed is a genus of flowering plants in the family Rubiaceae. It comprises about 275 species found throughout the tropics and subtropics. Its highest diversity is found in the Americas, followed by Africa, Australia and Asia.
Eleusine is a genus of Asian, African, and South American plants in the grass family, sometimes called by the common name goosegrass. One species (Eleusine indica), is a widespread weed in many places. Another species Eleusine coracana, is finger millet, cultivated as a cereal grain in India and parts of Africa.
Microgramma is a genus of ferns in the family Polypodiaceae, subfamily Polypodioideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). They are commonly known as vine ferns or snakeferns.
Pterocaulon is a genus of flowering plants in the sunflower family, native to North and South America and to Australasia. Blackroot is a common name for species native to North America.
Piptochaetium, or speargrass, is a genus of plants in the grass family, native to North and South America. Piptochaetium is a bunchgrass genus in the tribe Stipeae.
Melanthera, is a genus of perennial flowering plants in the family Asteraceae, native to North and South America, as well as Africa, Asia and Oceania, including Hawaiʻi.
Thalia geniculata, the bent alligator-flag, arrowroot, or fire-flag, is a plant species widespread across tropical Africa and much of the Americas.
