Plants mostly 3-15(-30+) cm (high or across), ± villous, glabrescent (sometimes stoloniferous, ± mat-forming). Leaves mostly basal; blades ± obovate to spatulate, 3-8(-15) cm, 2-3-pinnati-palmately lobed. Heads mostly clustered in leaf axils (at ground level), rarely scattered along stems. Involucres 4-8+ mm diam. Pistillate florets (20-)50-100+ in 1-8+ series. Disc florets 2-4+; corollas 1.5-2 mm. Cypselae: bodies oblanceolate to cuneate-oblong, 1.5-2+ mm, wings transversely rugulose or ribbed on proximal 2/3, shoulders not spinose laterally, faces distally villous to pilose, sometimes glabrescent; pappi 0 (persistent stylar sheaths indurate, spinelike, 1.5-3 mm, usually inflexed). 2n = 118 (Punjab). Flowering Mar-May(-Aug). Disturbed sites; 10-100+ m; introduced; Ark., Fla., La., Tex.; South America; introduced also in Mexico, Asia, Australia.
