In the present paper, we new species and two new varieties of Saxifragaceae and Rosaceae are described from the Hengduan Mountains. They are Philadelphus lushui-ensis Ku et S. M. Hwang, Parnassia lanceolata Ku var. oblongipetala Ku, P. nubicola Wall.ex Royle var. nana Ku and Malus muliensis Ku.
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