Shrub, 0.6-4.0 m high; erect, rigid, branches spiny, young branches grey-brown, glabrous or pubescent. Leaves simple, subsessile to sessile, oblanceolate to linear oblanceolate, slender, glabrescent, pubescent when young, margins entire. Flowers single or clustered on a stalk, pedicellate, pubescent, sweetly scented. Calyx 5-lobed, pubescent outside, upper part glandular. Corolla golden-yellow, sometimes with reddish streaks; tube campanulate, lobes crinkled, emarginate, margins ciliate. Flowering time Sept.-Dec. Fruit a beaked capsule, valves thin, light brown. Seeds winged.
Leaves simple, rarely 1-jugate, sessile to subsessile, 20–50 × 3–10 mm., oblanceolate to linear-oblanceolate, slender, rounded, retuse or emarginate at the apex, tapering at the base, more or less pubescent when young, glabrescent, margins entire, alternate on the young branchlets, 9–13 crowded together in each shortly lanate cushion on the older shoots; cushions always below the short spines.
Small tree or shrub, 1.2-4.0 m high. Leaves usually simple (rarely some 1-jugate), clustered on shortly lanate cushions; oblanceolate to linear-oblanceolate. Flowers golden-yellow, sometimes with reddish streaks; August to December and in May.
Corolla golden-yellow, sometimes with reddish streaks, with the tube 15 mm. long, minutely hairy in the throat and below the insertion of the stamens; lobes 15–19 mm. wide, subcircular, patent, crinkled, emarginate, margin ciliate.
Stamens adnate up to c. 10 mm. from the base corolla tube; filaments 7–12 mm. long; anthers 3–4.5 mm. long, not apiculate.
Calyx 5–9 mm. long, more or less 5-lobed, pubescent outside, sometimes glandular in the upper part.
Erect rigid shrub or small tree, usually with patent spiny branches, 1.2–4 m. tall.
Young branchlets quadrangular, grey-brownish, sometimes pubescent or glabrescent.
Flowers single or clustered on the cushions; pedicels 6–10 mm. long, pubescent.
Capsule 5.5–10 × 1.1–1.5 cm. long, beaked; valves thin, light-brown.
Seeds 1 × 1.8–2.2 cm., including the wings.
Ovary 2–3 mm. long.