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The work is devoted to the study of herbs of the representative genus Clover Trifolium fragiferum L. from the south Ukrainian flora. The aim of this research is to investigate the representative of Southern Ukraine flora Trifolium fragiferum L. which has a sufficient raw material base and use in folk medicine. Materials and methods. Samples were grown in the suburbs of Zaporizhzhia and harvested during full flowering (May – June). Microscopic analysis was performed with temporary preparations of leaves and stems. Plant extracts were analyzed chromatographically using an Agilent Technologies 6890 gas chromatograph with mass spectrometric detection. Results. The leaf is covered with parenchymal cells with slightly thickened membranes with anocytic stomata. The main parenchyma is composed of rounded toxoid cells. Stem rounded, covered with elongated parenchymal cells with thin membranes with almost no stomata and pubescence. Central axial cylinder is of beam type. Beams are open collateral, large. Above the phloem of the bundles is a multilayered sclerenchyma. The core is partially filled, hollow in the center. 63 compounds were found in the native extract, of which 37 were identified: coumarins, fatty acids, diterpene alcohols, oxygenated hydrocarbons of terpenoid nature, higher hydrocarbons, representatives of phytosterols, and phytosterols. After acid hydrolysis with sulfuric acid, 58 compounds were found, of which 49 were identified: coumarins, alcohols and phenols, aldehydes and ketones, compounds of diterpene nature. Conclusions. Pharmacognostic analysis of the genus Clover Trifolium fragiferum L. revealed diagnostic microscopic signs of leaves and stems. The components of the native extract are compared, and after its acid hydrolysis. Certain regularities in the distribution of classes of substances that characterized certain types of extracts were revealed: monoterpenoids, aromatic, heterocyclic compounds characterized the hydrolyzed product. Sesquiterpenes and steroid compounds are found only in the native extract of strawberry clover herb. Alcohols, aldehydes, and ketones were the majority in the hydrolyzed extract, and hydrocarbons were observed more in the native. Only 5 components were identified in both extracts: nonacosan, 2-phenoxyethanol, loliolide, dihydroactinidiolide and coumarin with significant differences in amounts.

The world plant products market is expanded rapidly and trade in them tends to grow by 15–25 % annually. The number of reports is increased proportionally about accidental contamination or deliberate, economically motivated falsification of plant raw materials. 27 % of the nearly 6.000 herbal preparations that are sold in 37 countries have contained undeclared contaminants, substitutes, or other components, according to the literature. We have conducted a plant conduction system microscopic analysis of the individual members’ genus Clover (Trifoliae L.), Fabaceae L. to identify morphoanatomical characteristics. Clover has anti-inflammatory, antiseptic, choleretic, diaphoretic, diuretic, hemostatic, expectorant, astringent properties and is used in many diseases. Aim. The finding common features and those that differ and can be used as diagnostic during studying the conducting system structure of genus Trifolium L. leaves and stems. Materials and methods. Plant material (herb) from Trifolium pratense L., T. incarnatum L., T. repens L. and T. fragiferum L. was harvested during the active flowering period – (May – June) and was dried in a well-ventilated place. Leaves and stems preparations were pre-boiled in 5 % sodium hydroxide water solution and fixed in chloral hydrate solution. Cross-sections were made with a microtome. The BIOLAM LOMO light microscope (Russia) and OLYMPUS SH-21 digital camera were used to record the data about identify the conducting apparatus of the plant’s leaf, petiole, and stem. Results. It has been examined the central vein structure of T. pratense L. and T. fragiferum L. leaves, it was determined that the conductive system is covered with a crystalline coating and there is one closed collateral bundle in the center, which is not typical for dicotyledonous plants. The petioles of T. incarnatum L., T. fragiferum L., and T. repens L. in cross-section are several different shapes. There are kidney-shaped and round. The conducting apparatus T. incarnatum L. and T. repens L. have arranged in a circle, closed and collateral. The leafstalk structure type of T. fragiferum L. is bunchles. It contradicts too the information about the structure conducting system of dicotyledonous plants. The stem’s conducting bundles are collateral and open. Conclusions. We have paid attention to the structural peculiarities of the conductive system of the central vein and petiole of objects for study: Trifolium pratense L., T. incarnatum L., T. repens L., and T. fragiferum L. when searching for differentiating features in some members of the genus Trifoliae L. in pharmacognostic analysis. The Dicotyledonae representatives are not characteristic of the closed type of conductive bundles, which we observed during microscopic examination.