Senecio spribillei W. A. Weber

Senecio spribillei (from Snowshoe Peak, Cabinet Mountains) is similar in aspect to S. neowebsteri of the Olympic Mountains, Washington.

Perennials, 5–20 cm (caudices branched). Herbage glabrous. Stems usually single. Leaves progressively reduced distally (basal and proximal withering before flowering); petiolate (petioles purplish, weakly winged, 4–5 cm); blades broadly triangular-ovate to suborbiculate, 2–4(–5) × 2.5–3 cm, bases truncate to ± cuneate, margins coarsely spinulose-dentate (mid leaves similar, persistent). Heads nodding, 4–6. Calyculi of "few," linear bractlets. Phyllaries ± 13, 7–9 mm, tips green. Ray florets "few"; corolla laminae ca. 7 mm (inconspicuous, equaling or barely surpassing phyllaries). Cypselae glabrous.