Himatanthus is a genus of flowering plant in the family Apocynaceae, first described as a genus in 1819. It is native to Panama and South America. Species 1. \n* Himatanthus articulatus (Vahl) Woodson - widespread from Panama east to French Guiana and south to Bolivia 2. \n* Himatanthus attenuatus (Benth.) Woodson - Venezuela, Colombia, N Brazil 3. \n* Himatanthus bracteatus (A.DC.) Woodson - Venezuela, Colombia, Guianas, Brazil, Peru, Ecuador 4. \n* Himatanthus drasticus (Mart.) Plumel - Guianas, Brazil 5. \n* Himatanthus lancifolius (Müll.Arg.) Woodson 6. \n* Himatanthus obovatus (Müll.Arg.) Woodson - Brazil, Bolivia, Guyana 7. \n* Himatanthus phagedaenicus (Mart.) Woodson - S Venezuela, NW Brazil 8. \n* Himatanthus semilunatus Markgr. - Amazon Basin 9. \n* Himatanthus stenophy