Orthosiphon thymiflorus (Roth) Sleesen

thymiflorus: with flowers like thyme.

Straggling, somewhat shrubby perennial herb, up to 1.5 m tall, not or hardly aromatic. Stems several ascending to erect, 4-angled, normally well branched, retrorsely pubescent along the angles, sometimes with dense spreading hairs. Leaves ovate to elliptic, usually 1-4 cm long, but larger in well-shaded plants, glandular punctate and hairless or pubescent above, pubescent, particularly along the veins beneath; margin scalloped or toothed; petiole up to 25 mm long. Inflorescence fairly lax with 6-flowered verticils 8-20 mm apart; bracts 2-3 mm long, ovate-triangular. Calyx 3-4 mm long, conspicuously purple on the upper lip, green otherwise; lobes of lower lip awn-like, 2-3 mm long. Corolla usually pink, sometimes white or mauve, 8-16 mm long; tube straight.

Widespread in tropical Africa, South Africa, Madagascar and tropical Asia from India and Sri lanka to China and Indonesia.

Orthosiphon thymiflorus là một loài thực vật có hoa trong họ Hoa môi. Loài này được (Roth) Sleesen mô tả khoa học đầu tiên năm 1959.