The Four Corners states, and the northern Rocky Mountains
Woodland, canyons, hillsides, from 4,300 to 10,000 feet
Narrowly oblanceolate, up to 4 inches long and 0.6 inches wide, sparsely covered by short, rigid hairs
Erigeron caespitosus is mainly a plant of the Rocky Mountains, especially in Wyoming and Montana, with smaller populations further south including Boulder Mountain and the Uinita Mountains in Utah. This is quite a variable species, reflecting its wide range of elevation and latitude.
Leaves are relatively long and slender, untoothed and unlobed, and they grow both at the base and along the stem. Leaves and stems have a covering of short, usually spreading hairs. Stems tend to be held at an intermediate angle, rather than fully upright.
Flowerheads are produced singly or in small groups, up to four. Phyllaries have a covering of short, white, spreading hairs, only slightly glandular. Ray florets number from 30 to 100, and tend to be pink to pale violet for higher elevation plants, white for plants at lower elevations.