Herb to 1 m; leaves and stems variably pubescent with non-glandular hairs, usually white-or grey-woolly at base of stems. Leaves mostly radical, ovate or elliptic, petiolate, the upper cauline ones narrowly elliptic or lanceolate, usually sessile; lamina up to 22 cm long; petiole to 9 cm long, usually broadly winged and often slightly stem-clasping. Inflorescence panicle-like, usually few-branched, pubescent with glandular hairs. Calyx 6–16 mm long; intersepalar membranes often conspicuous. Corolla-tube 13–30 mm long, 2–5 mm wide at top of calyx, distinctly narrowed at base; limb 8–24 mm diam.; lobes usually notched. Upper 4 anthers at about the same level, their filaments to 4 mm long; filament of the 5th stamen 6–12 mm long, inserted in lower half of corolla-tube. Capsule ellipsoid to ovoid-ellipsoid, 4–12 mm long. Seeds mostly reniform or acutely angled; testa irregularly honeycombed or wrinkled.
Grows mostly in sandy, gravelly or rocky soil, oftenon the coast or along creek banks near the coast.