Phytodiversity of Eastern Europe

23-43

Authors: Senator S.A., Vasjukov V.M., Zibzeev E.G., Korolyuk A.Y., Saksonov S.V.

The results of the floristic survey of 15 geographical points located on the territory of Volgograd region (Russia) are presented. A total of 565 vascular plant species belonging to 139 families were found. The authors found the location of 18 species listed in the Red Book of Russian Federation (2008): Artemisia salsoloides, Colchicum laetum, Delphinium puniceum, Fritillaria ruthenica, Genista tanaitica, Hedysarum cretaceum, Hyssopus cretaceus, Iris pumila, Jurinea cretacea, Koeleria sclerophylla, Lepidium meyeri, Matthiola fragrans, Otites hellmannii, Pulsatilla pratensis, Stipa dasyphylla, S. pulcherrima, S. zalesskii , Tulipa schrenkii and Red Book of Volgograd region (2017): Asperula tephrocarpa, Centaurea gerberi, Crambe tataria, Jacobaea schwetzowii, Juniperus sabina, Jurinea ledebourii, Lepidium coronopifolium, Scrophularia cretacea, Stipa cretacea.

50-64

Authors: Donskaya M.V.

The collection of herbaceous perennials at the St. Petersburg State University Botanical Garden numbers at least 680 taxa. The collection contains 78 species of the flora of the North-West of European part of Russia. This number includes 35 species, listed in Red Books of Russian Federation, Leningrad Region, Baltic Rim and Eastern Fennoscandia. The list of rare and endangered species contains a total of 46 items. Lunaria rediviva is rare species for Leningrad Region. It has joined the ecosystem of the park zone of Botanical Garden, demonstrating successful growth and pro-liferation. The collection contains endemics of the Caucasus and Siberia. Among the ornamental plants, the largest in number of cultivars are Phlox paniculata – 54 varie-ties and Paeonia lactiflora – 20 varieties. The results of observations of the wintering of cultivars of Antirrhinum majus, Lavandula angustifolia, Penstemon hartwegii are presented.

93-101

Authors: Sharaya L.S., Sidyakina L.V.

Spatial regularities in distribution of the green mass of herbaceous plants main communities at Mount Mogutova within the Zhiguli low mountains are studied using multiple regression methods. It is shown that 81% of this variability is due to direct environmental factors - soil acidity and humidity. At the same time, 77% of the green mass variability is explained by topography, as well as the direct environmental factors themselves (from 69 to 83%). The role of topography in spatial differentiation of direct-acting factors is substantiated.