Erect shrub to 2.5 m high, ±leafy throughout. Branches green, in time becoming grey-brown but largely remaining photosynthetic in the leafy parts, moderately to densely pubescent with glandular hairs, eventually glabrescent to glabrous; scattered non-glandular hairs sometimes present. Leaves borne singly, sessile, decreasing in size distally; lamina linear, rarely narrowly elliptic to obovate, with blunt to angularly acute apex and entire, flat to slightly recurved margin, 2–50 mm long, 0.5–6 mm wide, (the juvenile leaves larger), slightly thick, pubescent with glandular hairs mostly 0.05 – 0.1 mm long and fewer 0.2 – 0.4 mm long, the lower leaves glabrescent. Flowers solitary, leaf-opposed or terminal, the leaves in the flowering region very small but otherwise resembling the lower ones; bracts absent; pedicels 2–6 mm long. Calyx 4–7 mm long. Corolla 19–28 mm long, white to creamy-yellow, the striations green and with faint violet longitudinal bands on the tube outside; tube rim with a corona formed from 3 swellings below each lobe; lobes spreading to slightly reclining, linear, 12–20 mm long, lacking a tuft of hairs at the apex; margins ±flat. Stamens: longer pair 4.5–6 mm long, shorter pair 3–5 mm long. Capsule broadly ovoid-ellipsoid to pear-shaped, with acute to apiculate apex, 4–9 mm long. Seeds 9–18 in all, 1.7–2.2 mm long.
Grows in clay loam on dry rocky slopes in quartzite ranges, often associated with Allocasuarina, Xanthorrhoea and Dodonaea.