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An erect slender to bushy annual herb, 15–50 cm. tall. Stems sparingly to much branched, softly appressed puberulous; indumentum of short-stalked long-armed T-shaped hairs. Leaves opposite, becoming alternate on the upper stem, subsessile, 2–6 x 0.5–3.5 cm., lanceolate to oblong-lanceolate, apex acute or subobtuse mucronate, base rounded to cordate or broadly cuneate, margins entire, upper surface sparsely weakly pilose with fine T-shaped hairs, lower surface thinly whitish araneose-felted. Capitula small, few to numerous, in a ± diffuse arrangement; stalks slender, mostly 5–15 mm. long, appressed tomentellous. Involucres 3–5 x 4–5 mm., campanulate, florets exserted. Phyllaries few-seriate, narrowly lanceolate to elliptic-oblong, blunt at the apex, narrowly scarious on the margins, sometimes serrulate near the apex, hoary appressed-pubescent outside, the outer from c. 2 mm. long, the inner to c. 4 mm. long. Corollas mauve, 4–7.5 mm. long, funnel-shaped above shortly tubular below, tube and limb appressed puberulous the hairs short-stalked T-shaped. Achenes dark-brown, 1.0–1.5 mm. long, obovoid-turbinate, c. 12-ribbed, sparsely setulose, the bristles uncinate at the apex; pappus 0.