''Oxypetalum'' is a genus of flowering plants in the family Apocynaceae, first described with this name in 1810. The genus is native to South America.Funk, V. A., P. E. Berry, S. Alexander, T. H. Hollowell & C. L. Kelloff. 2007. Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro; Guyana, Surinam, French Guiana). Contributions from the United States National Herbarium 55: 1–584 ''

Oxypetalum coeruleum ''Oxypetalum coeruleum'' is a species of flowering plant, native to South America from southern Brazil to Uruguay. The synonymous name ''Tweedia caerulea'' is also used. Growing to long, it is a straggling evergreen perennial with heart shaped, ...

'' is cultivated as an ornamental. ;SpeciesThe Plant List, genus ''Oxypetalum''
/ref> ;formerly included moved to other genera ''(

Calostigma ''Oxypetalum'' is a genus of flowering plants in the family Apocynaceae, first described with this name in 1810. The genus is native to South America.Funk, V. A., P. E. Berry, S. Alexander, T. H. Hollowell & C. L. Kelloff. 2007. Checklist of the ...

, Cynanchum, Gothofreda, Morrenia,

Philibertia ''Philibertia'' is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1819. It is native to South America.Holm, R. W. 1950. The American species of ''Sarcostemma'' R. Br. (Asclepiadaceae). Annals of the Missouri ...

, Tassadia,

Tweedia ''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 ...

)''

References

{{Taxonbar, from=Q148795 Asclepiadoideae Apocynaceae genera Flora of South America