Stems several, from a woody rootstock, radiating, erect or prostrate, unbranched, up to 45 cm. long, striate, densely covered with short spreading hairs.
Flowers solitary, axillary, erect; peduncle up to 10 mm. long bearing above the middle 2-linear-lanceolate persistent 6–12 mm. long bracteoles.
Corolla tubular funnel-shaped, white or pink with purple centre, up to 4·5 cm. long; tube slightly swollen at the middle.
Sepals ovate-lanceolate, apex acute or acuminate, up to 8 × 3 mm. long, hairy outside, margin ciliate, glabrous inside.
Seeds more or less globose, velutinous tomentose.
Stamens hairy at the base.
Capsule globose, glabrous.
Ovary glabrous.
Perennial herb.