Abstract
Impatiens dalaiensis Gogoi & Borah is described and illustrated from Arunachal Pradesh, India. In contrast to the morphologically similar I. graciliflora (fruits also clavate) and I. radiata (fruits linear-cylindrical), the new species exhibits flower buds with a distinct awn or appendage, lower sepal mouths with an awn or appendage, and the distal lobe of the lateral united petals long-lorate or ribbon-shaped, twisted.