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Abstract

Adhatoda zeylanica Medicus is a well-known plant drug in Ayurvedic, UnaniTibbi, Siddha, Allopathic, Homeopathic, Naturopathic & Home Remedies. The present communication deals with the pharmacognostic evaluation on the stem and root of Adhatoda zeylanica Medicus (Acanthaceae). Macroscopic and microscopic examinations of the different organ, observations, and differential microchemical test has been carried out for the authentication of the samples. Physiochemical values such as the percentage of total ash, acid insoluble ash, acid soluble ash, extractive values like petroleum ether-soluble extractives, alcohol-soluble extractives and water-soluble extractives were calculated as well as histochemical tests and colour reactions with different chemicals were performed. INTRODUCTION: