The Wooly mule's ears (Wyethia mollis) belongs to Asteraceae (the Aster family). It is a perennial herb that is native to northern California, southeastern Oregon and western Nevada in the United States. This herb grows in montane forests and dry open meadows, and it can reach 30-40 cm in height. It thrives in volcanic soils because of its deep roots. The leaves are lanceolate or oval, up to 40 cm long, and are glandular and coated in woolly hairs. The flower-heads are a solitary or a cluster of 2 or 3 heads, each with up to 11 yellow ray florets. They bloom from May to July. The fruit is an achene about 1 cm long, not counting its pappus.