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Plants to c. 1 m high, glabrous or nearly so, often glaucous. Leaves 1-or 2-pinnatisect, narrow at base, with rachides and segments 0.5–4 mm wide; primary segments 1–5 per side, usually in distal half, entire or with secondary lobes or segments. Capitula few, 3–6 cm diam.; peduncle 4–12 cm long; involucre 7–10 mm long; outer bracts 2–5 mm long, with brown margin; inner bracts with hyaline extension 3–4 mm long; mature receptacle conical, slightly taller than wide. Ray florets c. 15–20; ligule 8–35 mm long, white. Disc florets numerous; corolla 2.5–3 mm long. Achenes dimorphic, 3–7 mm long; ray achenes 2–5 mm wide, with broad firm lateral wings and an adaxial wing; disc achenes 2.5–4 mm long, 1–2 mm wide, with inner series ±quadrangular, ribbed, and outer series with a moderate adaxial wing. Pappus an oblique adaxially longer corona to 2 mm long, of similar texture to achenes.
A herb. It grows 30-50 cm tall. The leaves are alternate and 3-10 cm long by 1-6 cm wide. They have narrow segments. The flowers are in heads at the tops of the branches.
