Leaves spirally arranged in 8 ranks or sub–verticillate in whorls of 4, occasionally 3 in the slenderest specimens, patent to appressed, very narrowly ovate, apices acute and shortly aristate, normally sulcate below but occasionally margins revolute and not meeting in the mid line at the back of the leaf, (3·5) 6·0–12·0 mm. long, (0·6) 0·8–1·5 (2·0) mm. broad, glabrous, usually with glandular teeth on the apparent margin more distant or absent towards the base; petioles glabrous, c. 1·5 mm. long.
Calyx segments free almost to the base, deep magenta to pink, broadly ovate, acute, 1·5–3·0 mm. long, usually (in specimens from the F.Z. area) reflexed, with minute glandular teeth along the margin.
Corolla urceolate, deep magenta to pink to white, glabrous, 3·5–5·5 mm. long, 2·5–3·7 mm. broad, lobes obtusely pointed to rounded, sinuses acute, c. 0·8 mm. deep.
Branchlets rather stout for the genus, 1·2–1·5 mm. diameter, occasionally more slender to 0·6 mm. diameter, glabrous, with strongly developed infra–foliar ridges.
Ovary globose, glabrous, c. 1 mm. in diameter; style stout, glabrous, 2·0–3·0 mm. long, about equalling the corolla, scarcely widened at the stigma.
Stamens 8, included, filaments c. 2 mm. long, anthers c. 0·8 mm. long, with aristate appendages c. 0·6 mm. long.
Bracteoles narrow, linear, acute, 0·7–2·5 mm. long, with very shortly stalked glands along the margin.
Bract leaf–like, 2·5–5 mm. long, insertedd on the basal part of the pedicel, but sometimes absent.
Flowers in the axils of the leaves on the upper 2–10 cm. of the stems.
Erect or trailing, sparingly branched sub–shrub 10–90 cm. tall.
Pedicels 2·5–15 mm. long, glabrous.