Pharmacognostic evaluation and HPTLC fingerprinting of Pirantai Vatakam, a Siddha formulation Journal title: The Journal of Phytopharmacology Authors: Neethu Kannan B. Gayathri Devi V, Anitha John, Lekha GS, Natarajan M, Kanagarajan A Subject(s): Biological Sciences, Agricultural Science, Biomedicine, Pharmacy, Pharmacognosy