Heuchera richardsonii R. Br.
Heuchera hispida auct. non Pursh
Heuchera richardsonii R. Br. var. affinis Rosend. Butters & Lakela
Heuchera richardsonii R. Br. var. grayana Rosend. Butters & Lakela
Heuchera richardsonii R. Br. var. hispidior Rosend. Butters & Lakela
Prairie alum-root is a North American native. The genus, Heuchera,, pronounced HOY-ker-uh, honors German botanist Johann Heinrich von Heucher. The species, richardsonii, honors its discoverer, Sir John Richardson. ”Alum-root” refers to the root’s astringent properties—it contains compounds that can reduce the flow of blood from a cut.
Identification: Plants take the form of a basal rosette—a set of leaves emerging from a central point near the ground. The leaves are slightly lobed into 7-9 palmate sections, with rough irregular edges, up to 3-5" (7.6-12 cm) around. Each leaf is atop its own hairy stem. Leafless flower-bearing stems grow to a height of 24-48" (60-121 cm). They are topped with inconspicuous green or greenish-white flowers, each about 1/8” long. Flowers appear from June to July.
Heuchera richardsonii at Illinois Wildflowers
Heuchera richardsonii at the University of Wisconsin's Robert W. Freckmann Herbarium
Heuchera richardsonii at the Lady Bird Johnson Wildflower Center
Heuchera richardsonii at Minnesota Wildflowers
Heuchera richardsonii on eFloras
Heuchera richardsonii description by Thomas H. Kent, last updated 2 Jan 2019.