Based on a collection made in southern Szechuan: "S Nan ch'uan (BvR 2183- fl.!)." It has not been seen.
Szechuan and Anhwei. Flowers white purplish. Flowering in April.
The specimens here referred to this species are determined on the basis of the original description. It appears that, if the species is correctly interpreted here, it is closely related to M. stachydifolius Maxim., and is scarcely different from the latter except for the long-attenuate and short-petiolate leaves.