Shrubby herb with robust stem; rootstock unknown; branches densely covered with subferruginous tomentum.. Leaf-blade suborbicular or broadly ovate, 6–10 cm. in diameter, obtuse but ± mucronate at the apex, shallowly cordate at the base, with margin remotely shallowly dentate or undulate, tomentose above and beneath; venation prominent beneath; petiole 1.5–2.5 cm. long.. Flowers in dense, many-flowered, capitate cymes; peduncle 3–5 cm. long; pedicels 5 mm. long; bracts small, oblong.. Sepals lanceolate to ovate, 10 mm. long, 3–4 mm. wide, acute.. Corolla very pale purple, funnel-shaped, 4.5 cm. long.
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