Common name of the flower is Golden Trumpet, Yellow Bell, Allamanda, Bush Allamanda, etc. In Bangladesh we call this as Allamanda(আলামান্ডা), Ghonta Ful(ঘন্টা ফুল), etc. Scientific name of the flower is Allamanda neriifolia from the plant family Apocynaceae (Oleander family). This is native to Brazil, but now widely available at our country.
Allamanda is a shrubby, vinelike bushy plant. Flowers of this plant are basically yellow in our country. Flowers look like a trumpet(also like a bell). Flower doesn't have any redolence. Elliptic to ovate shaped leafs are having lovely foliage.
Photos of this article were taken from Gazipur, Manikganj, Chapainawabganj, etc places during my several expeditions.