IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-3-33829 Original Research Paper PRELIMINARY PHYTOCHEMICAL SCREENING AND IN VITRO ANTIMICROBIAL ACTIVITY AGAINST CLINICAL PATHOGEN OF MEDICINALLY IMPORTANT ORCHID CALANTHE MASUCA (D.DON) LINDL V. Nandagopalan Dr. March 2021 10 3 01 02