Pharmacognostic analysis of plant material of Nepeta pannonica

Abstract

Pharmacognostic analysis of medicinal plant raw materials is an important stage of introducing the species into official use. The object of the study was the above-ground organs of Nepeta pannonica (family Lamiaceae), for which macro- and microscopic analysis was performed. The following diagnostic characters were determined at the macroscopic level: leaf — shape of leaf lamina, type of veining; stem — type of shoot branching, coloration, sub-rotative arrangement of leaves, weak pubescence; inflorescence — arrangement of flowers; flower calyx — shape of teeth, type of pubescence, fine ribbing; flower corolla — shape and size, coloration. The shape of epidermis cells of the upper and lower sides, areas above the veins; diacytic stomata, presence of small multicellular trichomes and large essential oil glands in the structure of leaf, stem, calyx and flower corolla; division of mesophyll into columnar and spongy tissues on the transverse section of the leaf were determined as microscopic features of the raw material.