Tweedia

Tweedia is a genus of flowering plants in the Apocynaceae family, 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".

1. Tweedia andina (Phil.) G.H.Rua - Chile
2. Tweedia aucaensis G.H. Rua - Argentina
3. Tweedia australis (Malme) C. Ezcurra - Argentina
4. Tweedia birostrata (Hook. & Arn.) Hook. & Arn. - Chile
5. Tweedia brunonis Hook. & Arn. - Argentina, Bolivia, Paraguay
6. Tweedia echegarayi (Hieron.) Malme - Argentina
7. Tweedia solanoides (Hook. & Arn.) Chittenden - Argentina, Brazil, Paraguay, Uruguay

formerly included

1. Tweedia coerulea, syn of Oxypetalum coeruleum
2. Tweedia floribunda, syn of Oxypetalum solanoides
3. Tweedia macrolepis, syn of Oxypetalum macrolepis
4. Tweedia versicolor , syn of Oxypetalum coeruleum