Pittonia 3: 90. 1896.
Perennials, 10–40 (–50) cm (rhizomes stout). Herbage closely lanate to floccose-tomentose, unevenly glabrescent. Stems usually single, rarely clustered. Leaves reduced distally; obscurely petiolate; blades oblanceolate to lanceolate, (4–) 6–12+ × (1–) 1.5–3 cm, bases tapering to winged petioles, margins dentate to denticulate (denticles dark, cartilaginous; mid and distal leaves smaller, bractlike). Heads (10–) 14–24 (–30+) in corymbiform arrays. Calyculi 0 or of 1–3+ lance-deltate to lance-linear bractlets (mostly less than 1 mm). Phyllaries ± 13, 3–5 mm, tips usually black. Ray-florets usually ± 5, sometimes 0; corolla laminae 5–8 (–10) mm. Cypselae glabrous.
Phenology: Flowering summer.
Habitat: Open wooded areas and subalpine meadows
Elevation: 1600–3500 m
Senecio scorzonella is restricted to high elevations in the Sierra Nevada–Cascade uplift and the White Mountains of California; it barely enters adjacent Nevada.