Phytodiversity of Eastern Europe

Number 4, 2019

305-352
Annotated checklist of the flora of Sverdlovsk Region. Part V: dicotyledonous plants (Rosaceae)

Authors: Knyazev M.S., Chkalov A.V., Tretyakova A.S., Zolotareva N.V., Podgaevskaya E.N., Pakina D.V., Kulikov P.V.

Abstract

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The article gives a detailed checklist of the flora of dicotyledonous plants (Rosaceae family) of Sverdlovsk Region, based on the long-term field researches, critical study of herbarium materials and literature sources. Information is provided on the distribution, bioecological features and economic significance of 138 species, 1 subspecies and 4 interspecies hybrids of the dicotyledonous plants of the natural flora of the region. Species in need of protection, as well as species widely cultivated on the territory of the region, were noted. The article discusses the history of the development of environmental ideas and a network of specially protected natural territories in the region.

353-396
Synopsis of alien plants of the Middle Volga Region

Authors: Senator S.A., Vasjukov V.M.

Abstract

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For the first time, a list of alien plants registered on the territory of the Middle Volga Region (within the boundaries of Samara and Ulyanovsk Regions) is published. The alien flora of the Middle Volga Region is represented by 461 species of vascular plants belonging to 275 genera and 77 families (23.1% of the total flora). For each species information is provided about the time of occurrence in the flora (archaeophyte, neophyte), mode of introduction (xenophyte, ergasiophygophyte), invasive status (ephemerophyte, colonophyte, epecophyte, agriophyte), life form, geographical element, frequency of occurrence, range of occupied habitats, as well as the date of first mention. The predominance of neophytes (394 species, 85.5%) over archaeophytes (67 species, 14.5%) was found in the alien flora of the Middle Volga region. For the first time, information is provided on the findings of such species as Cleome spinosa, Echinacea purpurea, Grindelia squarrosa, Jovibarba globifera, Phaseolus vulgaris, and Rudbeckia laciniata. All listed species are accompanied by comments. Among alien plants is dominated by epecophytes (149 species, 32.3%) and ephemerophytes (148 species, 32.1%), 142 species are colonophytes (30.8%) and 22 (4.8%) are agriophytes. 21 species belong to the disappeared ones, they are listed in the general list, but are not included in the analysis. Currently, there is a high rate of adventization of the regional flora – 161 species (35.0% of their total number) recorded in the last 20 years. According to the modes of introduction, alien species are distributed almost equally – 227 xenophytes (49.2%) and 234 ergasiophygophytes (50.8%). The most common alien species in the region have been identified. The results of distribution of alien species are presented by habitat types.

397-401
Euphorbia davidii Subils (Euphorbiaceae) – a new species for the Central Black Soil Region (Russia)

Authors: Tokhtar V.K., Kurskoy A.Yu.

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It is reported that Euphorbia davidii Subils – a new species noted in the flora of the Central Black Soil Region was found in the Belgorod Oblast (Russia). The total area occupied by the population of this species was more than 300 m2. The data on the main diagnostic differences between close species E. davidii and E. dentata Michx. are indicated and information on the findings of this alien plant in Europe and in Russia. Most populations of E. davidii have a small number of plants, but in some cases, groups of plants can occupy large area. The species noted mainly on railways and agricultural lands without introduce into natural habitats.

402-413
Materials to the flora of the South-West of Penza Region: Bekovo and Tamala Districts

Authors: Vasjukov V.M., Novikova L.A., Gorbushina T.V., Ivanova A.V., Lysenko T.M.

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As a result of botanical research in 2019 were found 620 species of vascular plants in the Bekovo and Tamala Districts of the Penza Region, including 5 species of the Red Book of the Russian Federation (2008) – Fritillaria ruthenica Wikstr., Iris aphylla L., Stipa dasyphylla (Lindem.) Czern. ex Trautv., S. pennata L. s.str., S. zalesskyi Wilensky ex Grossh. and 32 species of the Red Book of Penza Region (2013). The results of the floristic survey of 11 geographical points are presented.

414-421
The structure of the inflorescence and the implementation of seed productivity of Allium cristophii Trautv. in Moscow Region

Authors: Ivanova M.I., Baleev D.N., Bukharov A.F., Kashleva A.I.

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A. cristophii Trautv. [A. albopilosum C.H. Wright, A. bodeanum Regel, A. walteri Regel] is a type of subsection Cristophiana. It is an extremely polymorphic taxon. The species has a fairly high seed productivity, which varies widely. The seed productivity of two samples was studied, one of which, under the name A. albopilosum S. N. Wright, was introduced from the Netherlands, and the second A. cristophii was obtained from the Botanical Garden of the Institute of Biology of the Komi Scientific Center, Ural Branch of the Russian Academy of Sciences. The age of the mother bulbs – 6–7 years. In Moscow Region A. albopilosum and A. cristophii fruit sticking was 89.2 and 88.5%, the real seed productivity was 4.54 and 2.72 g per inflorescence, the weight of 1000 seeds was 5.69 and 5.20 g, respectively (average values). In A. albopilosum, an average insemination was found – 5.54 units / fruit, with up to 13 seeds per fruit being noted in the lower tier, 15 in average, and 11 seeds per fruit in the upper tier. A. cristophii recorded an average insemina-tion of 4.93 pieces / fruit, while in the lower tier there was a formation of up to 11 seeds per fruit, average – 10, top – 8 seeds per fruit.