Taxonomic revision of Habenaria josephi group (sect. Diphyllae s.l.) in the Pan-Himalaya

Species of the Habenaria josephi group in the Pan-Himalaya region are revised, based on their morphological characters and results of previous molecular phylogenetics. Eight distinctive species are recognised; key to the species, taxonomic descriptions, illustrations and distribution maps are provided. Habenaria josephi is re-instated, based on morphological and molecular evidence; H. wolongensis is synonymised with H. aitchisonii, a neotype for H. tibetica and the lectotypes for H. balfouriana, H. fargesii, H. glaucifolia and H. clarkei are designated.