Current status of Coluria geoides coenopopulations in different ecological-coenotic conditions was assessed on the base of characters of organisms and populations. Favorable conditions for growth and development of Coluria geoides turned out to be in weakly disturbed meadow-steppe phytocoenoses.
The morphological and biochemical characteristics of the Hedysarum neglectum Ledeb. which grow in deff erent coenotic and ecological conditions of Republic of Altai are researched. Morphometric readings and biochemical composition from different conditions of growth are described. A number of coenotic population of Hedysarum neglectum in which some morphological signs are naturally changed were selected.
Data on new locations for 12 species based on the original herbarium material from North Kulunda (Bolshoe Topolnoe Lake vicinities within the Novosibirsk oblast) are presented. For the fi rst time Juncus vvedenskyi , Atriplex cana , Ribes aureum and Limonium × erectifl orum have been shown for Novosibirsk oblast vascular fl ora. Available publications in some cases corrected and supplemented are included in the comments. Rare and protected species are accompanied with information on the condition and coenotical positions in the investigated communities. Th e regional protection status of several species ( Ephedra distachya, Ferula caspica, Limonium suff ruticosum ) is needed to be reconsidered.
Data about new findings of 35 rare plant species on the territory of Novosibirskaya oblast are given. Some of these species are included in the Red List of Novosibirskaya oblast.
In the Novosibirsk oblast have been found some species: new for Siberian fl ora xenophytic Cardamine fl exousa With., new and rare for the Novosibirsk region xenophytes Chenopodium fi cifolium Smith, Cardaria draba (L.) Desv., Vicia tetrasperma (L.) Schreb., Campanula patula L., xeno-ergaziophytes Galega orientalis Lam., Papaver somniferum L., Heracleum sosnowskyi Manden., Melissa offi cinalis L., and ergaziophytes Fragaria ananassa Duch., Physocarpus opulifolius (L.) Maxim., Lathyrus sylvestris L., Acer tataricum L., Euphorbia cyparissias L., Campanula trachelium L., Pyrethrum parthenium (L.) J.G. Sm.
The new record of rare species Fritillaria dagana for Mongolian flora is reported. General area of species and description of phytocoenosis are shown. Proposal to include this species in the third edition of Mongolian Red Book is given.
The abstract of flora of especially protected natural territory of Yakutia – resource reservat “Suntar-Hayata” is provided. Occurrence and distribution of vascular plants on high-rise belts and vegetative communities is specifi ed. Questions of distribution of rare plants, optimization and expansion of a security zone of east part Verkhoyansk Range are discussed.
The vegetation of the tundras and meadows of middle and lower reaches of the Anabar River represented by 4 classes, 8 associations and 3 subassociations of ecological-fl oristic classification. Seven associations and all subassociation described for the first time. A wide variety and large areas are occupied by the association of class Loiseleurio–Vac cinietea . Communities are part of polygonal tundra-bogs complexes, which are typical for flat watersheds (associations: Carici concoloris–Hylocomietum splendentis ass. nova hoc loco, ass. Pedicularido oederi–Aulacomnietum turgidi ass. nova hoc loco). Communities also occupy gentle slopes of the watershed hills (ass. Alectorio nigricantis–Diapen sietum obovatae ass. nova hoc loco). Less diverse are snow meadows ( Eutremo edwardsii–Sanionietum uncinatae ass. nova hoc loco and Saxifrago tenuis–Salicetum polaris ass. nova hoc loco) and dryas tundras (ass. Rhytidio rugosi–Dry adetum punctatae Matveyeva 1998 и ass. Rhodiolo roseae–Astragaletum alpini ass. nova hoc loco). Described a new alliance Carici concoloris–Aulacomnion turgidi. We put it in the class Loiseleurio–Vaccinietea . Communities of this alliance are stages of formation of the moss tundras from grassy bogs as a result of a cryogenic swelling of soil.
The petrophytic steppes with participation of alpine and arctic-alpine species represent unique element of the steppe belt. The ranges of these species are dominantly related to dry high-mountainous tundra in Siberia and Central Asia but in the Khakasia they occur in steppe communities in dry stony slopes at altitudes of 300–500 m. In the article description of floristic features petrophyte steppe communities, their detailed characteristic and the structure analysis vegetation is resulted.
