Potentilla tilingii, commonly known as threetooth horkelia, is a species of flowering plant in the rose family.

[1] It is native to all of the mountain ranges of northern California and southern Oregon, where it grows in coniferous forest.

Potentilla tilingii is a perennial herb forming tufts of erect leaves and stems.

The green or reddish stems reach a maximum length of about 40 centimeters and hold clusters of flowers.

Each flower has minute bractlets beneath small, hairy, pointed sepals and narrow white petals.