Abstract
Aconitum heterophyllum WALL. ex ROYLE and A. kashmiricum STAPF ex COVENTRY are taxonomicaly studied based on herbarium examination. Aconitum heterophyllum is extraordinarily variable in gross morphology. An alpine form of A. heterophyllum is short and few-flowered，and is closely similar to A. kashmiricum. Hence A. kashmiricum has been frequently confused with the alpine form of A. heterophyllum. However, the alpine form of A. heterophyllum and A. kashmiricum significantly differ in nectary spur shape: capitate and situated on the top of erect blades in A. heterophyllum，while knot-shaped and situated behind the blades in A. kashmiricum. Synonymy and re-description of both species are given in this paper. The lectotypification of A. kashmiricum was previously made, however, the outcome was contradictory to the ICBN. Here the lectotypification of A. kashmiricum is made again.
