Goniothalamus undulatus is a species of plant in the family Annonaceae. It is native to Thailand and Vietnam. Henry Nicholas Ridley, the English botanist who first formally described the species, named it after the wavy (undulatuscode: lat promoted to code: la in Latin) edges of its leaves.
It is a bush reaching 1.5 meters in height. Its oblong, hairless leaves are 17.8 by 7 centimeters with wedge shaped bases, cusped tips and wavy margins. The leaves have 11 pairs of secondary veins emanating from ...