Perennial with a sturdy woody rootstock. Stems several, c. 40-80 cm, herbaceous, simple or branched, with a white indumentum of readily rubbed off dendroid-stellate hairs. Leaves oblong-lanceolate, discolorous, 10-16 (-20) x 2-5 cm, densely white tomentose beneath with dendroid-stellate hairs, above green with scattered irregularly branched dendroid hairs, subentire or crenulate, truncate or subcordate; petiole 10-15 cm on basal leaves, much less on cauline leaves. Verticillasters 1-3 in axils of upper leaves, distant, dense c. 10-12-flowered, 2-3 cm in diameter. Bracts numerous, adpressed to calyces and as long as them, subulate. Calyx c. 15 mm, densely dendroid-stellate tomentose, truncate; teeth unequal, subulate erect-spreading, c. 3-5 mm long. Corolla rose or pale purple, 2-3 cm; upper lip clearly falcate, white-bearded on inner margins, laterally and apically notched. Mature nutlets not seen.