Herbage usually glabrous, leaves never stipitate-glandular, almost always resinous. Leaf blades oblanceolate, 15–30(–50) mm, margins usually pinnatifid (lobes in 1–3 pairs, spreading, linear, apically spinescent), sometimes entire or only proximal leaves pinnatifid. Involucres 5–6(–7) × 2.5–4 mm. Phyllary apices green to greenish yellow or yellowish (markedly thickened), not aristate, slightly or not gland-dotted, without resin pockets. Florets 12–15; corollas 4.5–6 mm. Cypsela ribs not forming hornlike extensions. 2n = 12.
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