Goniothalamus curtisiiGoniothalamus curtisii is a species of flowering plant in the family Annonaceae. It is a tree endemic to Peninsular Malaysia.DescriptionIt is a bush or small tree. It has narrow to oblong leaves with smooth upper surfaces and lightly hairy undersides. It has solitary flowers with large green sepals. The petals are yellow with red highlights and covered with velvety hair. It has numerous anthers.Reproductive biologyThe pollen of G. curtisii is shed as permanent tetrads.