Prairie alumroot or Richardson's rock-geranium is a modest soul. It blooms just as spring passes to summer, on stems at most a couple of feet tall. The flowers are up to 7 mm. long. Prairie alumroot is much like H. americana, but the flowers are slightly longer and the upper lobes are longer than the lower. The Blackfoot, Cree and Lakota people had several medicinal uses for alumroot. It helped the Blackfoot and Cree with looseness, the Cree with eye sores, and for the Lokota it cured skin sores.
Richardson's rock-geranium is sometimes grown in rock gardens. This plant is native in CO, IA, IL, IN, KS, MI, MN, MO, MT, ND, NE, OK, SD, WI, WY, AB, BC, MB, NT, ON, and SK. Lenawee Co MI, 6/17/12. Rockbreak family, Saxifragaceae.