Plants (10–)25–60 cm, self-compatible (heads not showy). Stems hirsute to villous, distally glandular-pubescent, glands yellowish, purple, or black, lateral branches often surpassing main stems (in large plants). Leaf blades lanceolate to linear-oblong or linear, 3–15 cm × 2–14 mm. Heads in open, corymbiform arrays. Involucres ± globose to ovoid or obovoid, 6–8 mm. Phyllaries hirsute and glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat. Ray florets 5–8(–14); corollas pale yellow or greenish yellow, laminae 6–8 mm. Disc florets 3–10(–30), bisexual, fertile; corollas 2.5–3.5 mm, pubescent; anthers ± dark purple. Paleae mostly persistent, mostly connate 1/2+ their lengths. Ray cypselae black or brown, sometimes mottled, dull, compressed, beakless (or nearly so). Disc cypselae similar. 2n = 48.
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