Shrubs, 30-50+ cm. Stems erect. Leaves mostly alternate; petioles 3-35 mm; blades deltate to rounded-deltate, 10-35(-80) × 10-30(-70) mm, bases cordate to truncate, margins coarsely toothed, abaxial faces densely puberulent (including veins), adaxial faces strigillose to scabrellous and gland-dotted. Pistillate heads clustered, proximal to staminates; florets (1-)2. Staminate heads: peduncles 0-1 mm; involucres cup-shaped, 2-3(-5) mm diam., strigillose; florets 8-30+. Burs: bodies ± globose to fusiform, 3-4+ mm, tomentulose and stipitate-glandular, spines 8-20+, scattered, ± subulate (basally navicular), 1-2 mm, tips straight or uncinate. Flowering Mar-Apr. Sandy washes, benches; 700-1200 m; Ariz.; Mexico (Sinaloa, Sonora).