Allamanda cathartica

Allamanda cathartica, commonly called golden trumpet, common trumpetvine, and yellow allamanda, is a species of flowering plant in the family Apocynaceae. It is native to Bolivia, Brazil, French Guiana, Guyana, Suriname, and Venezuela, and widely naturalised elsewhere in the tropics. This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius. It does not twine, nor does it have tendrils or aerial roots. It can be pruned into a shrub form. If not pruned it can sprawl to a height of 6 m (20 ft). According to McMullen, it can be up to 15 m (49 ft) in length in the Galapagos Islands where it is naturalised. The city of Canóvanas, Puerto Rico has adopted this species, known locally as canario amarillo, as its official flower. ...read more on Wikipedia.