Shrubs, tomentose with branched hairs or pubescent with mainly glandular hairs, or almost glabrous. Leaves alternate, simple, entire, sessile, subsessile or rarely petiolate. Inflorescences terminal or lateral cymes, sometimes raceme-, panicle- or thyrse-like, or flowers solitary. Flowers bisexual, slightly zygomorphic, with or without bracts; calyx campanulate to cupular, 5-lobed, persistent; corolla funnel-shaped to campanulate, 5-lobed, corolla-lobes spreading, inrolled in bud; stamens 4, in 2 unequal pairs, inserted at base of corolla-tube, a staminode sometimes present, anthers 1-celled, dorsifixed, not cohering around style, dehiscing by a terminal, semicircular slit; ovary 2-celled, stigma capitate or very shortly bilobed. Fruit a smooth capsule, opening by 4 apical valves, at least lower half enclosed by calyx; seeds more or less reniform.
9 species endemic to temperate Australia.