Potentilla yadonii, commonly known as Santa Lucia horkelia, is a rare species of flowering plant in the rose family.

[1] It is endemic to California, where it is known from the Central Coast Ranges from Monterey to Santa Barbara Counties.

It occupies chaparral and woodland habitat, often in meadows and dry riverbeds.

[2] Potentilla yadonii is a perennial herb producing hairy, glandular, gray-green mat of erect leaves around a caudex.

Each leaf is up to 20 centimeters long and is made up of several pairs of wedge-shaped to rounded leaflets with lobed to deeply notched tips.