Parry’s wirelettuce

Perennials, 10–30 cm (rhizomes stout). Stems 1–3, branches ascending, glabrous. Leaves green (at least cauline) at flowering; blades linear to lanceolate, shallowly runcinate, 2–6 cm (relatively thick and firm), margins pinnately lobed (thickened, usually minutely, sharply spinose, faces glabrous) . Heads borne singly along branches. Peduncles 2–10 mm (bracteate). Calyculi of (6–8) appressed bractlets (unequal, lengths to ¹/2 phyllaries). Involucres 10–14 mm. Florets (8–)10–13. Cypselae tan, 4.5–6 mm, (ribs well developed) faces slightly bumpy, grooved; pappi of 10–15, tan bristles (connate in groups of 2–4, bases persistent), plumose on distal 80%. 2n = 32.

Flowering May–Jun. Open, sandy and gravelly slopes in Upper Sonoran Zone, many plant communities, desert mountains; 700–2000 m; Ariz., Calif. Nev., Utah.