Thunbergia kasajuana , a new species of Acanthaceae from Nepal

Summary A new species of Thunbergia , T. kasajuana Bh.Adhikari & J.R.I.Wood is described from central Nepal. It is most closely related to T. grandiflora Roxb., because of its reduced annular calyx and similar inflorescence structure but differs in the much smaller corolla, herbaceous habit and different ecology. A description, photographs and a key to the species of Thunbergia native to Nepal are provided.