Impatiens bakthangensis sp. nov. (Balsaminaceae): a new species from Sikkim, India

Impatiens bakthangensis sp. nov. a new species of Impatiens is described from the Bakthang area of Gangtok, East district of Sikkim (northeast India). With its distinctly bucciniform lower sepals, the new species is similar to I. duclouxii and I. discolor with which it has previously been confused, but differs in several floral characters. Detailed descriptions, distribution and discussion of ecology are provided, along with colour photographs.