Purshia (bitterbrush or cliff-rose) is a small genus of 5–8 species of flowering plants in the family Rosaceae which are native to western North America.

Purshia species form deciduous or evergreen shrubs, typically reaching 0.3–5 metres (1–16+1⁄2 feet) tall.

The leaves are 1–3 centimetres (1⁄2–1+1⁄4 inches) long, deeply three- to five-lobed, with revolute margins.

The fruit is a cluster of dry, slender, leathery achenes which are 2–6 cm long.

[2] Purshia comprises the following species:[5][6] The following hybrid has been described:[5] The status of the following species and hybrids is unresolved:[5] The genus is native to western North America, where the species grow in dry climates from southeast British Columbia, Canada, south throughout the western United States to northern Mexico.