The area of the research Angara-Chunsky interfluves is located on the territory of Boguchansky district of Krasnoyarsk Region. The structure of the flora, reflecting the basic patterns of distribution of species in the chorological groups and geo- graphical elements of flora are presented in the study. By the principle of accordance of species distribution to allotment of botanical and geographycal (floristic) zoning out 6 chorologi- cal groups (Plurinacional, Holarctic, Palaearctic, Circumboreal, East Asian, Iranian-Turanian) and 24 geoelements, including binder (Plurinacional, Holarctic, Circumboreal, boreal, Boreal-Iranian-Turanian, Boreal and Central Asia, Palaearctic, West Palaearctic, East Palaearctic, Circumboreal, Eurosource-Central, Eurosource, European- West-Siberian, East European, West Siberian, Siberian, Cen- tral Siberian, Arctic Siberia, the Arctic and Siberia, North Asian, North Asian, South Siberian-Mongolian-far East, South Siberian-Vostochnobeisky, South Siberian-Far Eastern, East- ern-Turan-North Asian, South Siberian-Central Asian) were pointed out. The analysis of chorological structure indicatesthe relationship of flora with Europe, the Mediterranean, North America, Central and East Asia, which helps to identify pat- terns of florogenesis. In the flora of the Angara-Chun inter- fluve significant participation have Holarctic (28.12 %) and Circumboreal (26.66 %) groups, from which the Palaearctic (14.64%), East Asian (13.77%) and Iran-Turan group (10.58%) significantly lag behind. Among full geoelements stands Holarctic (14.64 %), from binding is distinguished for full- fledged geoelements - Eurosiberian-Central Asian (8.99 %), descending follows Palaearctic (8.26 %). Variegated nature of the flora from the position of chorological structure indicates its complex genesis due to various climatic changes, as well as the situation near the contacts of floristic branches having manufactured - the West Siberian and middle Siberian prov- inces, the Altai-Yenisei Oro-hemiboreal, the Tunguska-Lena boreal and Baikal hemiboreal provinces.
Angara-Chunsky interfluve, chorological group, geographical elements of flora, phytochorions
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