Pharmacognostic Studies on Datura metel Linnaeus the Anatomy of the Leaf

Abstract

Histologically Datura metel L. is readily distinguished from other cogeneric drug species by its smooth cuticle, basal width of covering trichome (measuring up to 34 μ), presence of stomata on both upper and lower leaf epidermides, non-warty stalk of glandular trichomes, collapsed stomata on leaf epidermis. Figures of quantitative microscopy are reported. Histological characters used to complement morphological ones enable one to identify drug in entire or powdered form.