Plectranthus ernstii Codd

Perennial semi-succulent herb up to 0.25 m tall, branching from the base; stems thickened at the base, up to 20 mm or more in diameter, becoming brown and potatolike with age. Leaves petiolate; blade semi-succulent, ovate to broadly ovate, 12-30 x 10-25 mm, sparingly pubescent, under-surface often glandular-puberulous, with pale to reddish brown gland-dots, apex obtuse, base truncate, margin with few, fairly distinct teeth; petiole 6-13 mm long. Inflorescence simple, 30-120 mm long; flowers in sessile, 1-3-flowered cymes, forming 2-6-flowered verticils 10-20 mm apart. Calyx 5-6 mm long in fruiting stage, glandular-hispidulous. Corolla pale bluish mauve to whitish; tube 4-8 mm long, expanding abruptly and forming a saccate base 4-5 mm deep, narrowing gradually to 2 mm deep at the throat; upper lip 4-5 mm long, lower lip concave, 3-4 mm long. Stamens free, of two lengths, upper pair 1.5 mm long, lower pair 3 mm long.

Can be grown by cuttings or seedlings.