Proc. Amer. Acad. Arts 19: 26. 1883.
Annuals, 5–30 cm. Stems decumbent to ascending. Leaves: blades oblong to oblanceolate, 5–40 mm, margins entire or toothed, plane (apices rounded to acute), faces lanate or tometose to tomentulose. Heads borne singly. Peduncles 1–8 cm. Involucres hemispheric to obconic, 5–6 mm diam. Phyllaries 6–10, ± connate. Ray-florets 6–10; laminae yellow, 2–10 mm. Disc-florets 10–30; corollas 1.3–3 mm (tubes cylindric, throats broadly funnelform, abruptly dilated, lobes glabrous or hairy, hairs 1-celled, not glandular; anther appendages deltate, widest at bases, not glandular). Cypselae 2.2–3 mm; pappi 0 or of 6–10 ± ovate to cuneate, entire, erose, or laciniate scales 0.1–0.5 mm.
Varieties 2 (2 in the flora).