Asteraceae: Flaveria mcdougallii
Endemic to seepage areas in a small portion of the Grand Canyon in both Coconino and Mohave counties, Arizona. This perennial herb is abundant within its limited habitat, but it is listed as 'imperiled.'
A yellow-flowering, 1 m-tall shrub growing only in alkaline, Mississippian-Cambrian aquifer springs in Grand Canyon, between Miles 137 and 178 on both sides of Colorado River. As a perennial, they have numerous stems, each with 3-6 flowers that bloom between September and November. The common name, McDougall's flaveria honors Dr. Walter B. McDougall, an ecologist who specialized in the flora of both Yellowstone and Grand Canyon National Parks, 1883-1980.