Argyreia subrotunda Q.R.Liu & M.L.Zhang, sp. nov. A stem with leaves and inflorescences B bract (outside) C bract (inside) D sepals from outer (left) to innermost (right) E opened corolla showing mid-petaline bands F opened corolla with stamens G pistil H fruit with persistent sepals I seed (adaxial surface) J seed (lateral surface). All drawn by Quan-Ru Liu from voucher specimens M. L. Zhang BNU2021YN074 (BNU!) (A–G), X. B. Guo BNU2021YN081 (BNU!) (H–J).