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The results of the analysis of literature on ecology and geographical distribution over zones and subzones of 23 Cryptophyta species of West Siberia fl ora are presented. Data on halobity, active water reaction and saprobity are given for each species. Nine species of limited occurrence in water bodies of West Siberia and Russia are indicated.

Morphological characters of the flowers and fruits of 31 genera of the family Boraginaceae of Altai Mountain Country are discussed. Separate keys for determination of genera on characters of the flowers and fruits are given.

The revision of the Novopokrovsky’s collection (Herbarium of the Southern Federal University, Rostov-na-Donu (RV) is done. According new found data 12 species and 1 subspecies names of the genus Galatella Cass. (previously described by I.V. Novopokrovskiy) were typified. 5 holotypes are recognized, holo- and lectotypes are kept in RV, LE, AA.

Revealed a variety of class syntaxa Carici rupestris – Kobresietea bellardii Ohba 1974 for the East Sayan. To order Kobresio–Dryadetalia Ohba 1974 and alliance Dryadion oxyodontae Zhitlukhina et Onishchenko ex Chytry et al. 1993 attributed two associations ( Androsaco bungeanae – Flavocetrarietum cucullatae ass. nova hoc loco, Alectorio ochroleucae – Dryadetum oxyodontae ass. nova hoc loco) and two subassociations. To order Kobresietalia myosuroidis Mirkin et al. (1983) 1986 Ohba (1974) and alliance Kobresion myosuroidis Mirkin et al. 1983 em. Hilbig 2000 assigned three associations ( Dryado oxyodontae – Festucetum komarovii ass. nova hoc loco, Th alictro alpini – Betuletum humilis ass. nova hoc loco, Pulsatillo ambiguae – Caricetum pediformis ass. nova hoc loco), two subassociations and one community. A wide variety of class syntaxa Carici rupestris – Kobresietea bellardii due to a variety of climatic conditions, the East Sayan Mountains. Here are a humid-semihumid and semihumid-semiarid highlands.

Th e morphogenesis in vitro culture of two endemic species of the genus Fritillaria – F. dagana and F. sonnikovae was described. It is noted that the highest regeneration potential was developed from the bulbous scales. Th e development on two ways morphogenesis – direct organogenesis and indirect somatic embryogenesis was observed.

Revealed biodiversity of slime molds of the zonal and intrazonal communities plain area south of West Siberia. Overall, the analysis included the 2581 sample of slime molds belonging to 178 species. Revealed two new species for the territory of Russia – Dianema nivale (Meyl.) G. Lister (this species was previously known from England, Denmark, Italy, Japan, India), Perichaena brevifila T.E. Brooks et H.W. Keller (this species was previously known from Kazakhstan, the US and Japan).

The distribution of the species of the Altai-Sayan lichen biota was studies within the boundaries of the Altai and Krasnoyarsk territories, Kemerovo and Novosibirsk Regions, the Republics of Altai, Khakasia and Tyva, Kazakhstan, Mongolia. At present, the level of the diversity achieves 1805 species from 326 genera. For the first time, the species lists of the lichen biota for the seven largest regions of the Southern Siberia are presented.

In 43.7 % (183 species and subspecies) flower plants of subclass Caryophyllidae in Siberia have 6 forms of sexual differentiation: monoecy, gynomonoecy, gynodioecy, dioecy, paradioecy and polygamodioecy. The most frequent forms of a sexual expression are gynomonoecy (63 species, 15.0 %) and gynodioecy (70 species, 16.7 %). From 6 families are richest with species with sexual diff erentiation Amaranthaceae , Chenopodiaceae , Caryophyllaceae and Polygonaceae.