Panicum (panicgrass) is a large genus of about 450 species of grasses native throughout the tropical regions of the world, with a few species extending into the northern temperate zone. They are often large, annual or perennial grasses, growing to 1–3 m tall.
Anthaenantiopsis is a genus of South American plants in the grass family.
Steinchisma is a genus of plants in the grass family, native to the Americas but a few of them naturalized in Africa.
Streptostachys is a genus of South American plants in the grass family.
Dielsiochloa is a genus of South American plants in the grass family. The only known species is Dielsiochloa floribunda, native to Bolivia, Peru, northwestern Argentina, and northern Chile.
Olyra is a genus of tropical bamboos in the grass family. It is native primarily to the Western Hemisphere, with one species extending into Africa.
Oplismenopsis is a genus of South American plants in the grass family. The only known species is Oplismenopsis najada, native to southern Brazil, Uruguay, and northeastern Argentina.
Munroa is a genus of New World plants in the grass family, native to North and South America.
Neobouteloua is a genus of Argentine and Chilean plants in the grass family.
Rhynchoryza is a genus of plants in the grass family. The only known species is Rhynchoryza subulata, native to Brazil, Argentina, Paraguay and Uruguay.
Tillandsia guelzii is a species in the genus Tillandsia. It is endemic to Jujuy Province of northern Argentina.
Tweedia is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1835. The genus is native to South America. An ornamental plant, Oxypetalum coeruleum, formerly included in this genus is commonly referred to as "tweedia".
- Tweedia andina(Phil.) G.H.Rua - Chile
- Tweedia aucaensisG.H. Rua - Argentina
- Tweedia australis(Malme) C. Ezcurra - Argentina
- Tweedia birostrata(Hook. & Arn.) Hook. & Arn. - Chile
- Tweedia brunonisHook. & Arn. - Argentina, Bolivia, Paraguay
- Tweedia echegarayi(Hieron.) Malme - Argentina
- Tweedia solanoides(Hook. & Arn.) Chittenden - Argentina, Brazil, Paraguay, Uruguay
Peltophyllum is a genus of myco-heterotrophic plants in family Triuridaceae, native to southern South America. It contains the following species:
Morrenia is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1838. It is native to South America.
Heterostachys is a genus of flowering plants in the plant family Amaranthaceae. The two species are shrubby halophytes native to South America and Central America.
Rupichloa is a genus of Brazilian plants in the grass family.
Altoparadisium is a genus of bunchgrass plants in the grass family. The species are native to Brazil and Bolivia in South America.
Canastra is a genus of bunchgrass plants in the grass family. Its species are endemic to Brazil.
Philodendron appendiculatum, also known as güembé, is a perennial species in the genus Philodendron, belonging to the family Araceae. It lives in the jungles, wetlands, and moist forests of South America.
Allenrolfea is a genus of shrubs in the family Amaranthaceae. The genus was named for the English botanist Robert Allen Rolfe. There are three species, ranging from North America to South America.
