Morpho-anatomical features of the flower Tulipa biebersteiniana Schult. еt Schult. in the South of the Central Russian Upland

The processes of formation of many species are observed in the south of the Central Russian Upland. For these conditions, the morpho-anatomical features of the tepals of Tulipa biebersteiniana Schult. Et. Schult. fil as the adaptive potential of seed propagation were studied for the first time. The tepals are arranged in two circles and differ in morphological and anatomical features. Differences in the structure of the main cells of the epidermis on the abaxial and adaxial sides were revealed. On the abaxial side, the main epidermal cells are rectangular, sometimes fusiform or rarely diamond-shaped, arranged in rows. They are covered with a weakly longitudinally wrinkled cuticle. The side walls of the abaxial surface are straight or slightly curved. On the adaxial surface, the side walls are zigzag, passing to the lateral edge in strongly sinuous. The localization, estimated functions and sizes of the hairs on the leaves of the tulip were determined. Single celled trichomes are located in two places.