Purple Moonflower is a climber, 3-5 m long, with slender twinning stems, which are purplish and covered with rough projections. Leaves are carried on stalks 4-12 cm long. They are heart-shaped, 7-18 X 6.5-15 cm, with a heart-shaped base, and pointed or shortly tapering tip. Flowers are borne in groups of one to few, with the bunch carried on 3-6 cm long stalk. Flower-stalks are 1-2 cm long, thicker at the top, much thickened in fruit. Flowers are purple or pale purple, and open at night. Sepals are oblong to ovate, fleshy, hairless, distinctly enlarged in fruit and eventually reflexed. Outer 2 sepals 6-8 mm, tip attenuate into a thick, suberect awn 4 mm; inner 3 sepals are 7-8 mm, tip blunt or notched, awn shorter. Flowers have a 3-6 cm long tube, flaring open into a flat flower, 3-5 cm across. Flowers are shallowly 5-lobed. Stamens are sometimes slightly protruding. Anthers are large, base heart-shaped. Pistil is sometimes slightly protruding. Stigma is 2-lobed. Capsule is ovoid, 1.8-2 cm, mucronate. Seeds are black, trigonous, about 1 cm, glabrous. Purple Moonflower is pobably native to Tropical America, and now naturalized in all tropical world. It is also found in the Himalayas, at altitudes of 910-1400 m. Flowering: October-January.