Corolla narrowly funnel-shaped, up to 3 cm. long, nearly glabrous; tube narrow, more or less 2 cm. long, purple; limb whitish.
Sepals subequal, ovate-lanceolate, up to 10 × 3 mm., membranous stellate-pubescent, ciliate at the margin.
Flowers axillary, solitary; bracts linear more or less 4 mm. long; pedicels 2·5 mm. long.
Capsule globose, glabrous, apiculate by the style-base.
Prostrate-ascending or erect annual herb up to 1·5 m.
Stems not much branched, slender, stellate-pubescent.
Seeds black, appressed pubescent.
Ovary glabrous.