[Members of the Sunflower Family with Discoid Flower Heads in the Cascade Mountains of Oregon and Washington]

Snakeroot, Western Boneset, Western Snakeroot

Ageratina occidentalis

Synonym: Eupatorium occidentale

Western Snakeroot, Western Boneset: Ageratina occidentalis - Western Boneset, Western Snakeroot: Ageratina occidentalis

Two close-up side views of the inflorescence of western snakeroot in bloom at a small quarry along forest road #3512 above the Cooper Spur Ski Area on Mt. Hood........August 2, 2007.

Snakeroot, Western Boneset, Western Snakeroot: Ageratina occidentalis (Synonym: Eupatorium occidentale) - Snakeroot, Western Boneset, Western Snakeroot: Ageratina occidentalis (Synonym: Eupatorium occidentale)

Snakeroot, Western Boneset, Western Snakeroot: Ageratina occidentalis (Synonym: Eupatorium occidentale) - Snakeroot, Western Boneset, Western Snakeroot: Ageratina occidentalis (Synonym: Eupatorium occidentale)

Images of western boneset observed on the 3000 year old lava flows on the east side of Clear Lake, Willamette National Forest.......August 2, 2023.

Western Boneset, Western Snakeroot: Ageratina occidentalis

This photo shows western snakeroot in bloom at a small quarry along forest road #3512 above the Cooper Spur Ski Area on Mt. Hood........August 2, 2007.

Paul Slichter