[Mule's Ears: The Genus Wyethia East of the Cascade Mountains of Oregon and Washington]

The flower head of a hybrid between Wyethia amplexicaulis and Wyethia helianthoides as seen at left in Summit Prairie, Malheur National Forest..........June 26, 2011. The rays on the hybrid are a light, creamy yellow as opposed to the solid white or yellow rays of the parents. The photo at right shows the inflorescence of a hybrid mule's ears as seen in vernally moist scablands along Indian Creek, northwest corner of Big Summit Prairie, Ochoco National Forest........May 13, 2018.

An apparent hybrid between Wyethia amplexicaulis and Wyethia helianthoides as seen at left in Summit Prairie, Malheur National Forest..........June 26, 2011. The photo at right shows both the hybrid and white mule's ears at Boeing Field, Ochoco National Forest......June 17, 2019.

Habitat views of hybrid mule's ears as observed in elevated areas just above the flood plain of Indian Creek, northwest corner of Big Summit Prairie, Ochoco National Forest......May 27, 2018. Note that both parent species of this hybrid are present in the photos. The white-rayed species is Wyethia helianthoides while the dark yellow species is Wyethia amplexicaulis.