Adhatoda_zeylanica
Justicia adhatoda
Species of flowering plant
Justicia adhatoda commonly known in English as Malabar nut, adulsa, adhatoda, vasa, vasaka,[3][4] is native to Asia.[5] Adathoda means 'untouched by goats' in Tamil. The name derives from the fact that animals like goats do not eat this plant due to its extreme bitter taste.[citation needed]
The plant's native range is Afghanistan, the Indian subcontinent (Bangladesh, India, Pakistan, Nepal and Sri Lanka), Laos, Myanmar and Vietnam. It has been introduced elsewhere.[6]