Pluchea lanceolata

Pluchea lanceolata, the rasna or rasana, is a species of flowering plant in the family Asteraceae. It is disjunctly distributed in Africa; Senegal, Chad, and Tanzania, and Asia; Iran, Afghanistan, Pakistan, the western Himalayas, and India. A perennial herb, it is considered a noxious weed by agriculturalists, and is used in Ayurveda and Tibetan traditional medicines.