Impatiens kamrupana - Kamrup Balsam

Kamrup Balsam is a sparsely branched, annual fleshy herb up to 1.5 m tall, named after Kamrup district of Assam, where it was first discovered. Stems are round, ridged, green to reddish, with younger portions velvet-hairy and nodes swollen. Leaves are alternate, evenly distributed, with 1.5-6 cm long velvet-hairy stalks; blades are ovate to elliptic, 5-17 x 2.3-5 cm, wedge-shaped to narrowed at base, rounded-toothed with bristly tooth tips, tapering at tip, and with up to 15 lateral veins. Flowers occur in axillary fascicles on 0.5-1 cm stalks, each bearing 3-6 flowers. Buds are greenish white with red veins; flowers are whitish and purple, with 1-1.5 cm stalks. The lower sepal is conical, 0.4-0.5 cm deep, with a 1-1.2 cm wide mouth and a 7-10 mm yellow spur. The dorsal petal is 0.6-0.9 x 0.8-1.3 cm, while lateral united petals are 1.7-2.8 cm long, bilobed and purple-white. Capsules are green, ridged and hairless, 1.6-2 x 0.8 cm. It occurs in NE India and flowers during July-September.