Studies on Impatiens L. (Balsaminaceae) of Western Himalaya – Rediscovery of Little-Known Impatiens reidii Hook.f. After 138 Years of Type Collection, Reinstating Impatiens inayatii Hook.f. and Merging Impatiens scullyi Hook.f. with Impatiens tingens Edgew

Impatiens reidii Hook.f. a rare presumed extinct and Kumaon endemic species only known from its type collection in 1886 is rediscovered from its type locality after a gap of 138 years. The identity of historically ambiguous name I. tingens is reinvestigated based on studies of literature, type specimens and recollection of live material from the type locality that confirmed the name I. tingens is conspecific with I. scullyi and thus latter name is synonymised. Impatiens inayatii, another little-known species described by Hooker as endemic to Kali valley, Kumaon currently treated as a synonym of Impatiens bicornuta is recollected from near the type locality after 124 years, our recollection confirms its identity as a totally distinct species from section Urticifoliae S.Akiyama & H.Ohba thus reinstating name I. inayatii. Augmented description for all three species is provided with information on their botanical history, species etymology, key identification characteristics, distribution, phenology, ecology and first photographic documentation of I. reidii and I. inayatii. Also, lectotypes are designated for the names I. reidii and I. tingens.