Bitterroot
（重定向自Lewisia rediviva）
Bitterroot (Lewisia rediviva Pursh) is a small perennial herb in the Portulacaceae or purslane family. It is found in western North America from low to moderate elevations on grassland, open bushland and forest. A small species of dry rocky or gravelly soils, it bears a single pink to lavender to white flower.