Abstract:
The aim. To study of the morphological and anatomical features of the structure of inflorescences of Chrysanthemum × hortorum Bailey, variety Pectoral.
Materials and methods. The inflorescences of Chrysanthemum × hortorum Bailey, cultivar Pectoral were used
for the analysis. The raw materials were harvested in the phase of mass flowering of plants in SeptemberOctober 2019 at the experimental plots of the department of floral and ornamental plants of the National Botanical Garden named after M.M. Grishko of the National Academy of Sciences of Ukraine in Kyiv.
Results. The investigated inflorescences are represented by bright orange double baskets, consisting of seated
semiflorets and disk flowers arranged spirally on a convex bare anthoclinium. The involucrum of Chrysanthemum × hortorum Bailey inflorescences of the Pectoral variety has a dense structure with elongated leathery
leaves. The marginal flowers of the anthodium are red-orange, pseudo-ligate female; the middle flowers are yellow, tubular, bisexual. The apex and edge of the epidermal cells of pseudo-ligate flowers are characterized by
papillary growth and slight folding of the cuticle; at the base of the corolla lingula there are cells with calcium
oxalate crystals in the form of small druses. The anatomical structure of tubular flowers is characterized by essential oil glands, typical for the Asteraceae family. The epidermis of the wrapper leaves is represented by oval
cells with numerous essential oil glands and large surface outgrowths.
Conclusions. The main diagnostic morphological and anatomical features of the inflorescences of Chrysanthemum × hortorum Bailey cultivar Pectoral have been established, which can be further used in the identification
of new medicinal plant materials
