﻿AbstractArgyreiasubrotunda, a new species from Yunnan Province, China, is described and illustrated. The new species resemblesA.fulvocymosaandA.wallichii, but differs from these in the flowers with an entire or shallowly lobed corolla, as well as smaller elliptic bracts, lax flat-topped cymes and shorter corolla tubes. An updated key to the species ofArgyreiafrom Yunnan province is also provided.