Impatiens cheruthoniensis and I. idukkiana (Balsaminaceae), Two New Species from the Southern Western Ghats, India

Two new species, Impatiens cheruthoniensis V.S.A. Kumar & Sindhu Arya and I. idukkiana V.S.A. Kumar & Sindhu Arya (Balsaminaceae), belonging to the section Uniflorae, are described and illustrated from Idukki District in the southern Western Ghats, Kerala Province, India. The new species morphologically resemble I. periyarensis and I. rupicola, respectively, but differ from them by morphology of dorsal auricles and capsule, shape of lower sepals, pollen surface, and by having extra-floral nectaries on stem.