Perennial, erect, stiff, hairy herbs or subshrubs. Leaves mostly cauline at flowering, alternate, sessile or very inconspicuously petiolate, cuneate, obtuse to acute, pinnately veined, abaxially gland-dotted. Capitula discoid, usually 4-flowered, sessile, aggregated in glomerules subtended by foliaceous bracts; glomerules ±globose, 5–10 mm diam., borne in racemose-spicate inflorescences in upper leaf axils. Involucre ±cylindric-oblong; bracts 8, similar, in 4 decussate pairs, the outer 2 shorter than the inner. Florets bisexual, zygomorphic, (2–) 4 (–5) per capitulum, white, pink or purple; corolla zygomorphic; tube slender, longer than abruptly funnel-shaped limb, with a deep inner sinus; lobes unequal; anthers sagittate below, with obtuse apical appendage; style branches 2, flattened and stigmatic adaxially. Achenes ±clavate, occasionally ±flattened, (8–) 10-ribbed; ribs strigulose or hispidulous. Pappus bristles 5–10, ±equal, broadened below, aristate, some contorted.
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