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.

Flowering Aug. Alpine rock ledges; of conservation concern; 2500 m; Mont.

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