Plectranthus ambiguus (Bolus) Codd

Perennial herb or soft shrublet, branching from near the base, 0.4-1.2 m tall; stems erect or decumbent, shortly and densely to sparingly pubescent with tufts of longer hairs at the nodes. Leaves petiolate; blade thin to thickish and slightly rugose in texture, ovate to broadly ovate, 25-120 x 20-90 mm, subglabrous to thinly pubescent, under-surface with honey-coloured to brown gland-dots, apex obtuse to acute, base abruptly cuneate to somewhat decurrent on the petiole, margin shallowly crenate; petiole 10-70 mm long. Inflorescence a congested panicle, rarely simple, 40-170 mm long; flowers in sessile, (1-)3-flowered cymes forming (2-)6-flowered verticils 2-6 mm apart. Calyx up to 8 mm long in fruiting stage, glandular-hispidulous, usually suffused with purple. Corolla violet to purple, 23-30 mm long; tube not deflexed nor expanded at the base, straight, almost parallel-sided, increasing gradually to about 2 mm deep at the throat; upper lip 4-5 mm long; lower lip concave, 3-5 mm long. Stamens free, up to 6 mm long.

Forest margins and on shady, rocky slopes; at elevations from 5-1,645 metres.

Can be grown by cuttings or seedlings.