Leafy herb to 2 m, densely pubescent, often woolly with glandular hairs. Leaves mostly cauline, broadly elliptic, the upper ones narrowly elliptic, lanceolate or pandurate, auriculate and stem-clasping at base; lamina up to 35 cm long; lower leaves petiolate, the petiole to 8 cm long; upper leaves sessile. Inflorescence panicle-like, usually few-branched; lower bracts occasionally leafy. Calyx 12–30 mm long. Corolla-tube 25–75 mm long, 1–5 mm wide at top of calyx; limb 15–35 mm diam.; lobes obtuse or occasionally shallowly notched. Upper 4 anthers at about the same level, their filaments to 5.5 mm long; filament of the 5th stamen 2–15 mm long, inserted in upper half of corolla-tube or just below middle. Capsule ellipsoid to ovoid, 8–16 mm long. Seeds acutely angled or reniform; testa irregularly honeycombed or wrinkled.
Growing in pockets of fertile, oftensandy, soil, in shelter of rocks on upper slopes.
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