Asarum asperum is a species of flowering plant in the pipevine family, Aristolochiaceae.

It is endemic to Japan, where it is found on Shikoku and in the western regions of Honshu.

[2] It is a perennial that produces thick evergreen leaves, which are ovate-orbicular and have a subhastate base.

[1] It produces ground-level maroon flowers, that are pollinated by insects.

[1] It forms colonies on the forest floor, where it often grows co-occurs with Ainsliaea cordifolia, with which it bears a resemblance.