Bark
Smooth, distinctively dark violet to near-black stems that are round, hairless (glabrous), and visibly swollen or jointed at the nodes.
Syn. Adhatoda subserrata
Smooth, distinctively dark violet to near-black stems that are round, hairless (glabrous), and visibly swollen or jointed at the nodes.
Lance-shaped, willow-like leaves (7–14 cm long) that are deep violet-green above with prominent purple veins beneath, completely hairless and glossy.
Small, tubular white flowers (~1.5–2 cm long) heavily streaked or spotted with purple, arranged in narrow terminal spikes.
Smooth, club-shaped capsules (~1.2 cm long) that dry out and split to release four small, flat seeds.
In Malayalam the plant is called Vathamkolli or Vathakodi reflecting its traditional use in South India for joint inflammation and rheumatic complaints. Its potential anti-inflammatory effects are being investigated scientifically.
Tropical Asia, Andaman Is., Taiwan, Kenya, Nepal