Phlomoides liangwangshanensis, a new species of Lamiaceae from Liangwang Mountain in central Yunnan, southwest China, is described and illustrated. It is morphologically most similar to P. franchetiana and P. ruptilis, but can be easily distinguished by its bracts 6–7 mm long, calyx teeth triangular and with spines 4–6 mm long, and without teeth-like sinuses between the teeth.