Senecio integerrimus var. ochroleucus

Herbage arachnose, tomentose, or villous, unevenly glabrescent, at flowering. Leaves: basal and proximal cauline distinctly petiolate; blades (cauline) usually ovate to rounded-deltate, sometimes obovate to oblanceolate. Heads (3-)8-12(-40+). Phyllaries ± linear, 7-10 mm, tips green or minutely black. Ray florets usually 5; corollas white or ochroleucous, laminae (5-)10-15(-20) mm.

Flowering spring. Moist openings in coniferous woodlands; 600-1700 m; Alta., B.C.; Calif., Idaho, Mont., Oreg., Wash.