Perityle emoryi is a species of flowering plant in the aster family known by the common name Emory's rockdaisy. It is native to the Southwestern United States, Southern California, Northwest Mexico, and the Baja California Peninsula. It is a common wildflower of the deserts, and can also be found in California coastal regions. It grows in many types of habitat, it tolerates disturbance, and it can become somewhat weedy. The plant is also known from Chile and Peru and it is an introduced species in parts of Hawaii. Its distribution is apparently expanding.