Erect, annual-biennial, strongly aromatic herb; stem covered with soft, silky, glandular hair or wool, branched at the top; leaves ovate-oblanceolate, obtuse or acute, coarsely dentate, tapering into densely villous, hairy, short, glandular petiole; heads light purple, short, glandular-pubescent, crowded at the top of branches, in long, axillary or terminal panicles; involucral bracts 2-3-seriate, narrow, acuminate, receptacle glabrous; outer bracts linear, acute, glandular hairy outside, inner bracts longer than outer, linear with scarious margins; corolla of disk florets 5-lobed, papilose hairy; achenes terete or 4-5 angled, not ribbed, hairy; pappus hairs long, white.