Potentilla parryi

Potentilla parryi, commonly known as Parry's horkelia, is a species of flowering plant in the rose family. It is endemic to California, where it grows in the chaparral of the Sierra Nevada foothills.

Description
Potentilla parryi is a low, mat-forming perennial herb growing in unobtrusive green patches on the ground. The leaves are 5 to 10 centimeters long and are each made up of small, toothed, oval-shaped leaflets. The somewhat hairy green to reddish-green stems are 10 to 30 centimeters (4 to 12 inches) long and bear inflorescences of a few flowers each. The flower has minute bractlets under larger, pointed sepals and five white petals. The center of the flower contains a ring of stamens around a patch of up to 50 thready pistils.