It is native to the eastern United States, where it is limited to the southern Appalachian Mountains.

[1] It is a compact, perennial shrub that grows 3–6 feet (0.91–1.83 m) tall.

Leaves are simple, hairy and opposite, oval or elliptical.

[1] The Latin specific epithet rivularis means loving brooks.

It refers to the plant's preference of growing in moist habitats.