Annuals, 15-20 cm (sometimes branched from bases). Leaf blades: bases (all or distal) ± clasp-ing, faces sparsely villous (hairs erect, multicellular) and stipitate- and sessile-glandular; proximal obovate to oblanceolate, 20-50+ × 5-12+ mm, mostly 1-2-pin-nately lobed (lobes ovate); distal similar, smaller, pinnately lobed or entire. Heads in ± corymbiform arrays. Involucres 3-4 mm. Recep-tacles 3.5-4 mm diam. Pistillate florets ca. 200; corollas: lengths ± ¹ / 2 styles, laminae 0. Disc florets 15-18. Cypselae tan, 0.8-1 mm, strigillose (hairs 0.7-0.1 mm) and with sessile glands near apices; pappi fragile or readily falling, of 16-18 white bristles in 1 series, 2 mm. Flowering spring. Moderately disturbed sites, limestone-derived soils; 1100 m; Tex.