Chaenactis xantiana

Plants 10-40 cm; proximal indument grayish, sparsely arachnoid, early glabrescent (usually glabrous by flowering). Stems mostly 1-5(-12); branches proximal and/or distal. Leaves basal (withering) and cauline, (1-)2-6 cm; largest blades linear or ± elliptic, ± plane or terete, ± succulent, 0-1-pinnately lobed; lobes 1-2(-5) pairs, remote, ± terete. Heads mostly 1-5(-7) per stem. Peduncles 1-5(-8) cm, glabrous (and ± expanded) distally. Involucres broadly obconic to campanulate. Phyllaries: longest 10-18 mm (surpassed by florets); outer distally tomentulose-puberulent in fruit (proximally glabrous, not stipitate-glandular), apices ± squarrose, blunt, pliant. Florets: corollas (diurnal) dirty-whitish to pinkish, 6-10 mm (± equal to cypsela lengths, anthers exserted); peripheral corollas erect to ascending, actinomorphic, scarcely enlarged. Cypselae 5-9 mm; pappi of 8 scales in 2, abruptly unequal series, longest scales 5-9 mm. 2n = 14.

Flowering late Mar-Jul. Open, deep, loose sandy (rarely gravelly) soils, arid and semiarid shrublands, chaparral; (100-)300-2500 m; Ariz., Calif., Nev., Oreg.