Sepals lanceolate or ovate-lanceolate, narrowly and long acuminate, 8–10 mm. long, glabrous or more or less pubescent, the inner ones with hyaline edges.
Corolla funnel-shaped, with cylindric tube, pale mauve, deeper inside throat, rarely reported to be primrose yellow, up to 2–6 cm. long.
Flowers axillary, solitary, buds with apical hair tufts; peduncle 2–25 mm. long, pedicels 4–11 mm. long; bracts linear up to 8 mm. long.
Stems generally few branched, prostrate, very slender 10–120 cm. long, obscurely striate, radiating, more or less pubescent.
Seeds greyish, very shortly puberulous.
Capsule globose, glabrous.
Perennial herb.