Silphium mohrii, known by the common names Mohr's rosinweed[2] and shaggy rosinweed, is a species of flowering plant in the family Asteraceae.

It is native to the Southeastern United States, where it is native only to northern Alabama, southern Tennessee, and extreme northwest Georgia.

[3] It is native to prairie remnants and rocky limestone openings.

Because of its restricted range and severely declined habitat, it is considered a vulnerable species.

It produces heads of yellow flowers in late summer.