The genus Allium in Siberia has been revised. The materials of LE, WIR, MW, ALTB, NSK, OSBU herbarium collections, information resources on the Internet, literature data on the flora of various regions of Russia and neighboring states, as well as materials personally gathered during collecting missions have been analyzed. As a result, it was established that 62 Allium species grow in Siberia, of which 11 are endemic. The synopsis presented in the article reflects the modern system of the genus Allium. The information provided for each species includes that on the initial description, ecological confinement and geographical distribution, as well as the most common synonyms. The geographical analysis of Siberian alliums revealed the largest representation of species (18) with the South Siberian type of distribution area, which confirms one of the points of view that distinguishes this territory as a special center of species diversity of the studied genus.

The paper presents a complete annotated list of botanical varieties and forms of durum wheat (T. durum Desf.) preserved in the VIR herbarium collection (WIR) and described by Olga A. Lyapunova. These include eight new varieties, namely T. durum var. falcaterythromelan Lyapun., T. durum var. falcataffine Lyapun., T. durum var. falcativalencia Lyapun., T. durum var. caumelanopus Lyapun., T. durum var. muticoleucomelan Lyapun., T. durum var. muticerythromelan Lyapun., T. durum var. muticapulicum Lyapun., T. durum var. horanileucomelan Lyapun., and nine new forms: T. durum f. tristealbiprovinciale Lyapun., T. durum f. tristeprovinciale Lyapun., T. durum f. tristemelanopus Lyapun., T. durum f. tristeboeufii Lyapun., T. durum f. tristemuticerythromelan Lyapun., T. durum f. tristemuticapulicum Lyapun., T. durum f. tristemuticoboeufii Lyapun., T. durum f. tristecauleucomelan Lyapun., and T. durum f. tristehoranileucomelan Lyapun.

The genus Turritis L. has a series of morphological features that distinguish it well from the main diversity of the genus Arabis L. A revision of the species composition of Arabis has made it possible to broaden the scope of the genus Turritis by including new representatives, namely T. borealis (Andrz. ex Fisch. et C. A. Mey.) V. I. Dorof. comb. et stat. nov., T. stelleri (DC.) V. I. Dorof. comb. et stat. nov., T. stelleri (DC.) V. I. Dorof. var. eschscholtziana (Andrz.) V. I. Dorof. comb. et stat. nov., T. stelleri (DC.) V. I. Dorof. subsp. japonica (A. Gray) V. I. Dorof. comb. et stat. nov., T. stelleri (DC.) V. I. Dorof. var. longistyla (N. Busch) V. I. Dorof. comb. et stat. nov., T. stelleri (DC.) V. I. Dorof. var. parviflora (N. Busch) V. I. Dorof. comb. et stat. nov., and T. stelleri (DC.) V. I. Dorof. f. purpurascens (H. Nakai et H. Ohashi) V. I. Dorof. comb. et stat. nov.

Eight species classified as rare in the Magadan Province, including those located at the boundary of their natural distribution area, with a narrow ecological amplitude, require not only monitoring of the known, but also search for new populations. These species can be recommended for the inclusion in the Red List of Crop Wild Relatives of the Far East. Most successfully these species can be conserved in protected areas with a special conservation regime. Populations of three species recorded in the Magadansky State Nature Reserve (Allium ochotense Prokh., Caragana jubata (Pall.) Poir. and Oxycoccus palustris Pers.) should be monitored on a regular basis. The occurrence of Rheum compactum L. in the nature reserve needs to be confirmed. Also, Rheum compactum L. and others species not recorded in the nature reserve, i.e., Artemisia dracunculus L., Bromopsis canadensis (Michx.) Holub, Dracocephalum stellerianum F. Hiltebr. and Linum komarovii Juz., require a search for stable cenoses (and establishment of intracenotic relations) in order to justify the need in creating special nature micro-reserves, including those in other specially protected areas of the province.

The study of regional floras is one of the main tasks of floristics, which allows one to make the most complete inventory and analyze the species composition. The analysis results in a reconstructed picture of the vegetation development in the investigated area. Human economic activities in the area have created new habitats for the species whose main distribution range is far beyond boundaries of the area. Therefore, the main objective of the study was to study the flora of the islands in the lower Vyg River. To achieve the goal, the route-reconnaissance method was used. The performed work revealed the constancy of the species composition of the flora of the islands. All in all, 136 species were found on the islands, 50% of which are common in this territory and make up the main core, which is part of the northern taiga flora. The differences between the floristic composition of the islands are due to the current state of the Vyg River, altered by the dam of the hydroelectric power station, and a large anthropogenic pressure associated with the development of tourism in the places of petroglyphs accumulation.