Wooly mule's ears (Wyethia mollis) belongs to the family Asteraceae (the Aster family). It is a perennial herb that is native to northern California, southeastern Oregon and western Nevada. 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.