Annuals, (10-)15-25(-30+) cm. Leaves: petioles 10-20 mm; blades either oblanceolate to linear, 5-15+ × 1-2+ mm, or rounded-deltate overall, 10-25(-60+) × 15-25+ mm, (1-)2-3-pinnatisect, ultimate lobes oblanceolate to spatulate or linear, 5-15+ × 0.5-5 mm, bases ± cuneate, ultimate margins entire, sometimes ciliolate, apices obtuse to acute, faces glabrous. Heads usually borne singly, sometimes in open, ± corymbiform arrays. Peduncles 10-20(-90) mm. Calyculi of (1-)3-4 appressed to spreading, spatulate to linear bractlets or bracts 3-10(-25+) mm (sometimes foliaceous: pinnate, lobes 3-5+, linear), margins ciliolate, abaxial faces usually glabrous, sometimes sparsely hispidulous. Involucres ± campanulate to cylindric, 2-3(-8) × 2(-3)[-4] mm. Phyllaries (3-)5, oblong to lanceolate orlinear, (2-)3-8 mm. Ray florets 0 or 1(-3+); laminae whitish, 1-1.5(-3+) mm. Disc florets (3-)5-9; corollas whitish to yellowish, 2-2.5 mm. Cypselae: outer red-brown (sometimes with lighter blotches), ± equally 4-angled, linear-fusiform, 5-6(-8) mm, margins not ciliate, apices ± attenuate, faces 2-grooved, usually glabrous; inner similar, 10-14 mm; pappi of 2-3 erect, retrorsely barbed awns 1-2(-3) mm. Flowering Sep-Oct. Wettish spots on rocky slopes; 1400-2100 m; Ariz., N.Mex.; Mexico.