Priazovsky reserve is located in the Kuban-Priazovskaya lowland in the delta of the Kuban River. The vegetation cover is represented by communities of coastal, swampy, saline, steppe, synanthropic habitats. According to published data, the flora of the reserve included 397 species. As a result of research conducted in recent years, another 50 plant species have been identified for this territory. Currently, the flora of the Priazovsky reserve includes 447 species, of which 24 species are alien.

Green cuttings are leafy parts of the stem with one or more buds. Plant growth stimulators play a very important role in plant life. Thanks to them, you can safely root and grow a large number of green and lignified cuttings of such crops as fruit, berry and many others.

The study of the rootability of green cuttings of varieties and forms of pears was carried out in a greenhouse with a film coating equipped with a fog-forming installation. As substances stimulating the processes of root formation, a preparation was used: β-indolyl-3-butyric acid (BCI) (50 mg/l), water was used as a control. The objects of research were clonal pear rootstocks: PG 12 (k), PG 1716, PG 2 of the selection of I. V. Michurin VNIIS; Caucasian, K-1, K-2, 4-26, 4-39; and Northern quince of the selection of I. V. Michurin VNIIGiSPR; foreign - Dutch pear rootstock OHF- 333, German pear rootstock Piro II; French clonal quince rootstock VA 29. A zoned form of pear PG 12 was used for control.

According to the results of the conducted studies, it was found that when processing green cuttings of pears and quinces with a plant growth stimulant, the following had the greatest rootability result: Northern quince, clonal stock of quince VA 29. Without the use of a plant growth stimulator, Northern quince demonstrated the greatest rootability. As a result of the conducted studies, it was found that the greatest height of increments when using and without the use of a plant growth stimulator were characterized by: Northern quince, clonal rootstock of quince VA 29, as well as clonal rootstocks of pear PG 12 (k), PG 17-16, PG 2. The highest degree of root formation during processing and without the use of a plant growth stimulator: Northern quince, clonal rootstock of quince VA 29, as well as clonal rootstocks of pear PG 12 (k), PG 17-16, PG 2. The largest diameter of the conditional root neck when using a plant growth stimulator was demonstrated by: Northern quince, clonal rootstock of quince VA 29, as well as clonal rootstocks of pear PG 12 (k), PG 17-16, PG 2. When using a plant growth stimulator, the greatest root length was possessed by: Northern quince – 20.4 cm, clonal rootstock of quince VA 29 – 19.5 and clonal rootstocks of pear PG 12 (k) – 18.4 cm, PG 17-16 and PG 2. The greatest number of roots when treated with a plant growth stimulant were possessed by: Northern quince, clonal rootstock of quince VA 29 and clonal rootstocks of pear PG 12 (k), PG 17-16, PG 2.

A comprehensive ecological survey of the territory of the central part of the village of Belaya Clay is proposed. Purpose: to give the plantation of Plathanus trees the legal status of a specially protected natural area of local importance "recreational zone". The introduced species of plants are described, the current state of plantings is established. The territory of the Belo-Glinsky district is included in the biome: Steppe plain Black Sea-Ciscaucasian, geographical variant AzovCaucasus forb-grass steppe. An analysis of the physical and geographical conditions of the Beloglinsky region showed that the natural conditions of the steppe zone of the eastern section of the Western Ciscaucasia are unfavorable and do not meet the environmental requirements of tree introducers. The establishment of a protected area in the village of Belaya Glina should lead to a restriction of activities for the further transformation of woody plant introducers. The need to preserve a man-made planting of a park type is a requirement and condition for the sustainable development of a rural settlement.

The article provides information about alien species new to the flora of Dagestan, identified in recent years during the authors’ field research in various districts of Dagestan. For the first time, Eclipta prostrata and Lycium chinense are presented for the flora of Northern Caucasus. Euphorbia maculata and Halimodendron halodendron are indicated for the first time for the flora of Dagestan. In addition, the distribution of one of the invasive species, Xanthium orientale, which is widely found within Dagestan, which is not listed for Dagestan in floristic reports, has been clarified. For each species, a brief morphological description is given, indicating the distinctive features from related species, habitat, information about the state of populations, phenophase, etc. Also, all species were assigned invasive status, according to the criteria and methodological recommendations used in maintaining regional “Black Books”. It is noted that the presence of these species in Dagestan indicates insufficient knowledge of alien flora and that the process of biological invasions in the region has been intensifying in recent years.

For the flora of Dagestan, 27 groups of geographical elements have been identified, which are combined into 6 classes. The most numerous is the class of Ancient Mediterranean species, which make up almost 60% of the flora of Dagestan (2072 species). In second place in terms of the number of species is the class of Common Holarctic species, which makes up almost 20% of the flora. The class of Boreal species, to which 454 species belong, makes up 12.98%. This is followed by Linking species (158 species) with 4.51%.

In the floristic regions located on the flat part of the republic, the proportion of the class of Ancient Mediterranean species is less compared to all other regions and ranges from 39–41%. In the strip of the upper foothills, where three floristic regions are located (Kazb., Buin. and Kait.-Tab.), the proportion of species of this class increases markedly and ranges from 45–48%. In the mountainous part, the proportion of species belonging to this class increases even more, and ranges from 58 to 64% in different areas.

The second place in terms of the number of species in all regions is occupied by the class of the General Holarctic species, with the exception of the Tersko-Kumskii, where they are inferior to the Boreal species. Their shares in floristic regions fluctuate to a lesser extent, in contrast to the previous class. In low-lying areas, their share fluctuates mainly within the range of 26–29%, with the exception of the Tersko-Kumskii, where they make up 19.76%. In the strip of the upper foothills for all three floristic regions (Kazb., Buin., Kait.-Tab.), the share of the General Holarctic species is almost the same and ranges from 30–32%, which is the maximum value compared to other regions. In the remaining 5 floristic regions located in the mountainous part, the share of the Common Holarctic species in the floras somewhat decreases and varies within 23–28%.

The class of Boreal species also dominates for the most part in the floras of areas located in the lowland and foothill zones. The largest proportion of these species is observed in the flora of the Tersko-Kumskii lowland, where they account for more than 30%. The second place in terms of the share of these species is occupied by the Tersko-Sulakskii district with 20.3%. In the Primorskii district and in the areas located in the Piedmont zone (Predg., Kazb., Buyn., Kait-Tab.), the proportion of Boreal species in the floras is almost the same and ranges from 13–15%. In the Samurskii floristic region and in all 5 regions located in the mountainous part, the proportion of Boreal species in the floras decreases even more. So, in Sam., Akht.-Kur. and Centr.-Dag. their shares do not reach 

10%, in the districts of Dikl.-Dyult. and Bezht.-Did. boreal species make up about 8%, and in the Transsamurskii floristic region they are the least — 6.33%.

The class of Connecting species has a large share in the floras of floristic regions located on the lowlands and in the foothill zone, while their maximum values (more than 6%) are in the foothills and the Samurskii region, with the exception of the Kaitago-Tabasaranskii region, where they make up 4.39%. In the floristic regions located in the mountainous part, their share in the flora decreases even more and fluctuates within 2–3%.

Widely distributed species generally play an insignificant role in the floras of the regions, but they are more pronounced in the lowlands. Thus, the proportions of these species have the maximum value in the Primorskii floristic region, where they make up 6.31%, slightly less in the flora of the Samurskii region (5.4%) and even less in the Tersko-Sulakskii region — 4.5%, and in the Terek-Kumskii they are the least among the lowland regions — 3.23%. In all other regions, their share in the floras is almost the same, and it is insignificant, ranging from 1.5–2%.

Approximately the same regularity in terms of the value of the share in the floras is also characteristic of Adventive species. Their maximum share is noted in the Primorskii floristic region, where they amount to 5.61%. In second place is the Tersko-Sulakskii district, for which they account for 2.65%, and then the Samurskii district with 2%. In all other floristic regions, the proportions of these species in the floras are commensurate and insignificant, and fluctuate within 0.5–1%.

In addition, a brief description of each region is given by the value of the share of participation in the composition of the flora of individual geographical elements and the features of the flora of each of them are noted, as well as an analysis of groups of individual geographical elements with the identification of patterns of their distribution in the floristic regions of Dagestan. 

New data on the places of growth of family Poaceae species in the Western Ciscaucasia and Northwestern Transcaucasia are presented. The survey took place on the Taman Peninsula – the village of Kuchugury and its surroundings, cape Pekla, Mount Karabetova, Chushka Spit and in the area of the farm Betty in May-June 2022 and allowed to record 62 species of the family Poaceae for certain areas of the Western Ciscaucasia and Northwestern Transcaucasia.