Potentilla webberi, commonly known as wire mousetail and Webber's ivesia, is a species of flowering plant in the rose family.

[2] Potentilla webberi is a small perennial herb forming a clump on the ground in the clay soil of the local sage scrub.

The red to reddish-green stems are generally not erect and are up to 15 centimeters long on the ground or drooping over it.

A stem bears an inflorescence made up of a single cluster of several flowers.

Each flower is about a centimeter wide with five triangular to lance-shaped greenish sepals and five bright yellow petals.