Spiradiclis karstana sp. nov. A habitat (The arrows show the places of growth) B habit C variation range of leaves D stipule E inflorescence, side view F long-styled flower, frontal view G disc and calyx H remnant of dehiscent capsule, frontal view I long-styled flower J short-styled flower. Spiradiclis jingxiensis K habit L stipule M variation range of leaves. Photos by Lei Wu, Ming-Feng Long and Xin-Xin Zhu.