Senecio scribneri Rydberg, Mem. New York Bot. Gard. 1: 441. 1900

Herbage usually villous, sometimes arachnose or tomentose, at flowering. Leaves: basal and proximal cauline ± petiolate; blades (cauline) oblong or lanceolate to sublinear (6–10 × 0.5–2 cm). Heads 3–6(–16+). Phyllaries ± linear, 10–15 mm, tips usually green, rarely black. Ray florets probably mostly 5; corollas yellow, laminae 12–15 mm.

Flowering spring. Plains and open foothills; of conservation concern; 300–1600 m; Sask.; Mont.

Variety scribneri is poorly known and seldom collected. It is distinguished by its relatively larger heads and narrower leaves and its indument (in a region where var. integerrimus is notably glabrate).