Thevetia peruviana is the Latin name of large evergreen shrub or small tree, that grows to 7 meters tall. It is named after a French missionary who collected plants in South America. In Thai it is called ram pheuy.

This evergreen bears yellow to dark yellow, trumpet-like flowers and its fruit consists of a large seedpod that bears some resemblance to a Chinese lucky nut. The sap and the seed of the Yellow Oleander are highly toxic.