Erect herb 20-60 cm tall, from a creeping rootstock; stems pubescent with short T-shaped hairs.. Leaves sessile, oblong-lanceolate, 2.2-6 cm long, 0.3-0.9 cm wide, base cuneate, usually few-dentate towards the base, obtuse or acute, apiculate, pubescent, glabrescent, densely glandular with sunken glands.. Capitula in lax terminal few-headed cymes; involucre 6.5-8 mm long; phyllaries 3-seriate, purplish at the apices, lanceolate, 2-6.5 mm long, acuminate, ascending-pubescent, glandular.. Corolla white, lilac or purple, tube 5-5.5 mm long, lobes 1.3-2 mm long, pubescent.. Achenes 2.6-3 mm long, obscurely 5-ribbed, ascending-pubescent; outer pappus of narrow scales, 0.7 mm long, inner pappus white, 5-6.5 mm long.
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