紫萼山梅花（学名：Philadelphus purpurascens）为虎耳草科山梅花属下的一个种。

Philadelphus purpurascens is a deciduous shrub native to Yunnan and Sichuan in southwestern China, growing in mixed forests, thickets and on mountain slopes.

It is a shrub growing 1.5–4 m tall. The leaves are ovate to elliptic, glabrous or sparsely villous along the veins. The flowers are produced in racemes of 5-7 (-9) together; the individual flowers are white, with a purple or dark brown calyx. Flowering is in spring or early summer.