Rocky places; canyons, cliffs and slopes, from 3,600 to 8,200 feet
Ovate to deltate, around one inch long and wide, sparsely hairy
June to September
Perityle ciliata is found only in Arizona, in scattered hilly and mountainous areas, most commonly around Flagstaff and Sedona. Leaves are approximately triangular in outline, with either entire or finely toothed edges, often with few large lobes. They and the stems have a covering of short, glandular hairs. Leaves are usually alternate towards the top of the stem, and opposite lower down.
Flowerheads contain between 30 and 40 yellow disc florets and from six to ten notched, white ray florets, sometimes tinged pink. The narrow, equal-length phyllaries number from 13 to 20; they are usually green, with purplish tips. Flowerheads are attached by stalks of around one inch.