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Flavonoid composition of the leaves of Spiraea media var. media Schmidt (7 populations) and S. media var. sericea (Turcz.) Regel (2 populations) were studied. Contents of quercetin, kaempferol and isorhamnetin in hydrolysates were determined, and quercetin, kaempferol, hyperoside, isoquercitrin, rutin, avicularin, astragalin, isorhamnetin 3-rutinoside in extracts were done. Largest number of flavonoid compounds was found in extracts of S. media var. media from natural population in the Olyokminsky district in the Yakutia (33 compounds), its smallest number was found in the extracts of S. media var. sericea from the Olginsky district in the Primorsky Krai (18 compounds). Populations of S. media var. media differ in the predominant constituents. In its permanent constituents 12 fl avonol glycosides were revealed, including hyperoside, astragalin and isorhamnetin 3-rutinoside. Specifi c constituents for S. media var. sericea were not found, in its permanent constituents 14 flavonol glycosides were revealed, including hyperoside, isoquercitrin and avicularin. The absence of isorhamnetin glycosides in the leaves of S. media var. sericea from the Olginsky district in the Primorsky Krai is indicated the possible membership of similar populations of separate species S. sericea .

Research on antiviral activity concerning a virus of flu of the subtypes A/Aichi/2/68 (H3N2) (person) and A/chicken/Kurgan/05/2005 (H5N1) (birds) at 70 species of plants 47 genera of 14 botanical families from natural flora of Southwest Siberia is conducted. Species possessing by activity of different degree concerning each of fl u virus subtypes are revealed. High antiviral activity was found in extracts of 16 species which can be recommended for more profound studying as basic at creation of antiviral phytopreparations concerning a virus of fl u of the person and birds, besides it is necessary to consider the taxonomical provision, extraction type, a phase of development and part or organ of plant.

Results of long-term introduction of 13 genus of rare beautiful-flowering of shrubs in Botanical Garden of Ufa city are presented. The detailed morphological characteristic of each taxon is given, data on seasonal cycle of development are presented. Recommendations about reproduction of presented species and sorts and agrotechnology of their cultivation under the conditions of Bashkir Cis-Urals are off ered.

The data about algae flora of the mineralized Ulugkol Lake (The State Nature Reserve “Khakassky”). Taxonomic list of seaweed is presented by 109 taxons from specific and intraspecific rank, belonging to 55 genus, 36 families, 9 classes and 5 departments. With respect to species diversity, two division Bacillariophyta - 67 taxons and Cyanoprocaryota - 25 taxons, are distinguished. The greatest number of species has been noted in benthos. Dominants of the plankton and benthos associations are mainly applies to the halophilous and mesogalobous organisms.

As result of the generalization of the whole lichenologic information on Republic Altai, predominantly peculiar, the extent of species diversity its lichen biota currently comprising 1711 species from 310 genera and 94 families has been determined for the first time. The participation of the lichens at the desert steppes, true low cespitose and tall cespitose steppe plant communities of the mountain-steppe belt has been appreciated.

Seven Pinus sibirica living form (single-stemmed, few-stemmed and multi-stemmed straight-stemmed trunk trees, supra nival skirted, shrub-like form, elfin tree, and living windfallen tree) as well as one relatively autonomous morphological structure (elfin wood form in the tree butt of the straight-stemmed trunk mother tree) are identified and described at forest-tundra mountain ecotone in the Aktru mountain glacial basin (Severo-Chuisky Range, the Altai Mountains). Ways of their formation are considered. The main reason of the formation of the living forms excluding the one-stemmed straight-stemmed trunk trees with symmetric crown is death of tree fragments because of weather factors or geomorphological events. During XX century the climatic conditions at the forest-tundra mountain ecotone in the basin were favourable for growth of the living forms of P. sibirica straight-stemmed trunk trees .

The variability structure of 18 morphological floral characters of Potentilla bifurca in 28 coenopopulations of Altai-Sayan Mountain region has been studied. Classification of the characters studied into groups on the basis of relative variability and determinacy has been performed. Distinctions between flower indices individuals of coenopopulations (40.0-92.5 %), coenopopulations in a province (9.5-50.6 %) and coenopopulations in diff erent provinces (2.9-27.1 %) contribute signifi cantly to total variation. Evidence of sexual dimorphism in P. bifurca flowers is independent of conditions of growth.

The results of the investigation of five cоenopopulations of Filipendula ulmaria (L.) Maxim. in the south of West Siberia and Mountain Altai are presented. Ontogenesis of the soboliferous short-rhizome life form was studied. The main structural individual unit of an adult individual is a dicyclic mesorosular monocarpic shoot, there are shoots with incomplete development cycle (latent generative shoots). Two types of populations ontogenetic spectra were revealed: unimodal spectrum in strongly sward coenosises and left-hand spectrum at moderate grazing pressure. The most powerfull plants grow in the fl oodplain coenosises.

The annotated synopsis of the subtribe Hyoseridinae Less. including one genus: Sonchus L. (5 species) and the distribution of species in the administrative regions of Asian Russia are given.

The article contains information about the type materials for 36 taxa of the family Poaceae kept in M.G. Popov Herbarium of the Central Siberian Botanical Garden SB RAS (NSK). The type category is indicated, text of the original label and text of protologue are cited for each specimen. 104 type specimens were found in collections, including the 8 lectotypes, the 7 isolectotypes, 15 holotypes, 24 isotypes, the 1 syntype and 49 paratypes, the 7 authentic specimens was found. Lectotypes for name of 8 taxons were designated: Festuca chionobia T.V. Egorova et Sipliv., Hierochloë glabra Trin. subsp. chakassica Peschkova, Poa altaica Trin. f. subtilis Malyschev, P. barguzinensis Popov, P. botryoides (Trin. ex Griseb.) Roshev. var. glaucissima Popov, P. botryoides var. pendula Popov (NSK) and lectotypes for Elymus pallidissimus (Popov) Peschkova, Festuca popovii E.B. Alexeev (LE). The description of new species Bromopsis malyschevii N. Vlassova is suggested instead of two invalid taxons.