Linanthus ciliatus) is a species of flowering plant in the phlox family known by the common name whiskerbrush.

Leptosiphon ciliatus is a hairy annual herb producing a thin stem up to about 30 centimeters tall.

The leaves are each divided into needle-like lobes up to 2 centimeters long, with leaf pairs appearing as a cluster of narrow lobes.

The face of the flower is less than a centimeter wide and pale to bright pink with white and yellow coloring and reddish spots on the throat.

The bloom period is March to July, depending on altitude and latitude.