Annual herbs, 1-9 dm tall; stems erect, 1-4 mm diam., glabrate to antrorsely strigose with hairs 0.5 mm long. Leaves narrowly ovate, 3-8 cm long, 1.5-3 cm wide, acute to acuminate, the base attenuate, both surfaces strigillose with hairs 0.3-0.5 mm long, the margin serrate; petioles 3-12 mm long and 0.5 mm diam. Inflorescence globose terminal and axillary clusters (approaching a secondarily headed condition); peduncles 1-2 mm long. Heads radiate, 4-5 mm tall, 3.5-5 mm wide; involucre compressed, completely enclosing the florets, of three herbaceous strigillose bracts, one large and two small, the large bract ovate, 4-5 mm long, 3.5-5 mm wide, the apex rounded, the smallest bract narrowly ovate, 3 mm long, 1 mm wide, the apex acute, bidden beneath the slightly larger middle-sized bract; paleas absent; ray floret 1, the ligule ovate, 0.4 mm long, 0.3 mm wide, the tube 1.3 mm long, 0.1 mm diam., glabrous; disc floret 1(-4), the corolla 0.6 mm diam., the throat 1 mm and tube 1.5 mm long, glabrous, the anthers black, the ovary filiform, 1.5 mm long, 0.1 mm diam. Achene obovoid, gray, compressed, with a central ridge, 2-2.5 mm long, 1.2-1.4 mm diam., glabrous. Chromosome number n = 12.