Wyoming Rare Plant Field Guide
Yermo xanthocephalus
- Similar Species: Rayless Senecio spp. have more numerous, green involucre bracts.
- Flowering/Fruiting Period: June-July.
- Distribution: Endemic to the W Wind River Basin, Wyoming (Fremont Co.).
- Habitat: Barren outcrops of white silty clay of the Split Rock Formation. Elev. 6700 ft.
- References: Dorn 1991.
