Petalostelma

Petalostelma is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1885. They are native to South America.

• # Petalostelma bracteolatum (E.Fourn.) Fontella - Rio de Janeiro
 * Species

• # Petalostelma calcaratum (Decne.) Fontella - Brazil

• # Petalostelma cearense Malme - Ceará

• # Petalostelma dardanoi Fontella - Pernambuco

• # Petalostelma martianum (Decne.) E.Fourn. - Brazil

• # Petalostelma robertii (S.Moore) Liede & Meve - Matto Grosso

• # Petalostelma sarcostemma (Lillo) Liede & Meve - Salta in Argentina, Chuquisaca in Bolivia