Suffrutex, straggling with slender branchlets or erect and robust, 0.3-1.0 m high; glabrous, young parts finely or roughly stellate-pubescent, with minute scales or tubercles. Leaves sessile, filiform, ericoid, acute, glabrous and clustered; 4-15 mm long (var. filifolia, var. grandicalyx), ± 20 mm long (var. Erobusta). Stipules leaf-like. Inflorescence 1-or 2-flowered cymes in axils of upper leaves or terminally racemose; peduncles 2-6 mm long; pedicels finely stellate-pubescent. Flowers ± 9 mm long, dark red on outside, inside yellow. Calyx 10 mm long (4-6 mm long in var. filifolia), markedly pale cream-coloured, 5-lobed to beyond middle, lobes long-acuminate (var. grandicalyx), shorter than petals, not markedly pale, rough with minute scales (var. robusta). Petals strongly contorted, oblong in upper half, abruptly narrowed into a claw with ciliate margins. Flowering time all year. Fruit a capsule, up to 12 mm long.
Glabrescent, twiggy shrublet, up to 1 m tall. Leaves and stipules subequal, often in tufts, linear, margins revolute. Flowers on slender, elongated branches, few per node, orange to reddish, calyx shorter than or as long as petals, lobes usually spreading and papery. Capsule 5-knobbed.
Glabrescent, twiggy shrublet to 1 m. Leaves and stipules subequal, often in tufts, linear, margins revolute. Flowers on slender, elongated branches, few per node, orange to red, calyx lobes usually spreading and papery. Capsules knobbed.