[Butterweeds & Groundsels: The Genus Senecio in the Cascade Mountains of Oregon and Washington]

The photo at left shows white western groundsel as seen in prairie alongside Lakeside Road about one-half mile west of Fisher Hill Rd in Conboy Lake NWR.......May 10, 2008. The photo at right shows white western groundsel in bloom atop Monte Carlo, Washington Department of Natural Resources and Gifford Pinchot National Forest lands west of BZ Corner, WA......June 10, 2021.

The photo at left shows the inflorescence of white western groundsel as seen along the Fifteenmile Creek Trail #456 near Fifteenmile Creek Forest Camp, Mt. Hood National Forest......June 27, 2023. The photo at right shows white western groundsel as seen in oak woodlands along the River Route Road along the upper Klickitat River to the east of Glenwood, WA.........May 3, 2008.

The photo at left shows the inflorescence of white western groundsel and its distinctive whitish ray flowers. Photographed along Forest Rd K3000 below Bird Creek Camp at approximately 2450' on the southeastern side of Mt. Adams..........May 7, 2005. The photo at right shows a close-up of the flower head of white western groundsel as seen at Bird Creek Campground along Bird Creek on the southeastern slopes of Mt. Adams.........May 30, 2006.

The photo at left shows a habitat view of white western groundsel as seen along the Surveyor's Ridge Trail #688 about a mile northwest of Gibson Prairie Horse Camp, Mount Hood National Forest.....June 11, 2024. The photo at center shows the general form of white western groundsel. Photographed along Forest Rd K3000 below Bird Creek Camp at approximately 2450' on the southeastern side of Mt. Adams.........May 7, 2005. The photo at right shows white western groundsel in bloom atop Big Huckleberry Mountain, Gifford Pinchot National Forest......June 23, 2024.