Authentication of morphological and microscopic features of stem and leaf of Panax quinquefolius L. grown in Ontario, Canada

Abstract

The present paper highlights an authentication of microscopic features of stem and leaf of Panax quinquefolius L. grown in Ontario, Canada, including microscopy of stem, leaf, leaf stalk and surface view of leaf epidermis, powder and dissociation of seed, stem and leaf of P. quinquefolius L. The methods could be adopted to distinguish Panacis quinquefolii Radix imported from Canada, which is available or presented as mixtures in the raw herbs marketed in China at present. The number of compound leaf, palisade ratio, vein islet numbers, starch grain, calcium oxalate, cluster crystals and secretory canal characteristics were presented. So it was suggested that the stem and leaves could be further researched on biological active effects.

Keywords: Panax quinquefolius L., morphological and microscopic features, authentication, Ontario, Canada.