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'.
SpeciesTweedia andina (Phil.) G.H.Rua - Chile
Tweedia aucaensis G.H. Rua - Argentina
Tweedia australis (Malme) C. Ezcurra - Argentina
Tweedia birostrata (Hook. & Arn.) Hook. & Arn. - Chile
Tweedia brunonis Hook. & Arn. - Argentina, Bolivia, Paraguay ...