Features of the Anatomical Structure of the Above-ground Generative and Vegetative Organs of the Caucasian Endemic Plant Teucrium Nuchense K.Koch (Labiatae)

The anatomical structure of the above-ground generative and vegetative organs of the Caucasus endemic, Teucrium nuchense K.Koch, the representative of Georgian flora, a rich source of biologically active substances, has been studied. Key diagnostic features of the anatomical structure of this promising medicinal plant has been identified using plant microtechnique, in particular camera method.

The basal cells of the internodal epidermis of the shoot of T. nuchense are arranged in a linear, slightly curved-angular structure, equipped with an encyclocyclic and tetracyclic type of stoma apparatus; The stomatal complexes exhibit a chaotic spatial arrangement each other. The monocyclic central cylinder of the internodal shoot consists of continuous phloem and congenerous xylem structural elements; longitudinally arranged rows of tracheal and vascular lumens are visible in the wood; the gap of the tracheal elements of the wood of shoot are oval and spherical in shape, and their internal cavity is slightly angular; the thickening of inner membrane of the conducting vessels is spiral and annular, and the tracheal membrane is porous; In the wood, single rows of radial rays are differentiated.

The leaf of T. nuchense is bifacial, hypostomatic, dorsoventral in structure; the leaf is covered with simple and glandular villi, as well as glands, on both sides; the basal cells of the leaf epidermis are non-serrated, curved and curved-walled in structure, equipped with chaotically arranged stomata of the diacytic type. The differentiated vascular bundle in the leaf pulp is characterized by a reverse-collateral structure.

The sepal of the flower of T. nuchense is covered with conical villi as well as secretory, Spheroidal glandular trichomes and glands; the stomata are imprinted in the covering tissue of the leaf; the pulp of the sepal is monochromatic and equipped with complete - collateral and incomplete - tracheal elements of the wood, vascular bundles. The corolla petal of T. nuchense is also uniform in structure and the differentiated vascular bundles in it are incomplete.