[Groundsels: The Genera Packera and Senecio East of the Crest of the Cascade Mountains of Oregon and Washington]

Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel

Senecio hydrophiloides

Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus

Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus) - Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus)

Sweet marsh butterweed as seen at left at Pisgah Meadows along the southern boundary of the Bridge Creek Wilderness, Ochoco National Forest..........June 14, 2015. Note the serrate leaf margins and greenish herbage. The photo at right shows sweek marsh butterweed in vernall moist meadows along Forest Road 41, Umatilla National Forest......June 17, 2023.
Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus)The photo at right shows sweet marsh butterweed (?) photographed at Hunter Prairie, along the south side of the White River just east of the Mt. Hood N.F. boundary............May 28, 1994.
Characteristics:

Sweet marsh butterweed is also known as stout meadow groundsel.

Habitat:

Sweet marsh butterweed is found in wet meadows in the mountains and in the foothills.

Range:

Sweet marsh butterweed is found from from eastern Washington and Oregon east through northern Idaho to western Montana.

Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus) - Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus)

Sweet marsh butterweed found in wetlands (left) around the North Fork Crooked River about one and one-quarter miles south of FS Road #42, Ochoco National Forest.........June 13, 2015. Note again green leaf color and the serrate leaf margins. The photo at right shows sweet marsh butterweed at Potter Meadows across Forest Road 38 from the southern trailhead for the Ochoco Mountain Trail, Ochoco National Forest.........July 13, 2017.

Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus) - Leaves of Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus)

Sweet marsh butterweed blooming in wetlands at the south shore of the southernmost Pine Lakes, Turnbull National Wildlife Refuge......July 4, 2018.

Inflorescence of Stout Meadow Groundsel, Sweet Marsh Butterweed, Tall Groundsel: Senecio hydrophiloides (Synonyms: Senecio foetidus, Senecio foetidus var. foetidus, Senecio foetidus var. hydrophiloides, Senecio oreganus)

Sweet marsh butterweed (?)photographed at Hunter Prairie, along the south side of the White River just east of the Mt. Hood N.F. boundary..........May 28, 1994.
Paul Slichter