Wyethia mollis, US Forest Service photo
* USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Data from 07-Oct-06]. 
Wyethia mollis is a species of flowering plant in the aster family known by the common name woolly mule's ears. It is native to the mountains of northern California, southeastern Oregon, and western Nevada, where it grows in forests and other mountain habitat. It is a perennial herb growing from a tough taproot and caudex unit and producing a stem 30 to 40 centimeters tall, but reaching a meter in height at times. It is hairy to woolly in texture, sometimes losing its hairs with age. The leaves have lance-shaped or oval blades up to 40 centimeters long which are glandular and coated in woolly hairs, especially when new. The inflorescence is a solitary flower head or a cluster of 2 or 3 heads, each with up to 11 yellow ray florets which may be up to 4.5 centimeters long. The fruit is an achene about a centimeter long, not counting its pappus.
Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License