THE ESTIMATE OF PERSPECTIVENESS OF INTRODUCTION OF SOME NORTH-AMERICAN SPECIES OF FAMILY ROSACEAE JUSS IN THE ARBORETUM OF MOUNTAIN-TAIGA STATION OF FAR-EASTERN BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES

The estimate of perspectiveness of 20 species of North-American trees and
bushes of the family of Rosaceae which are cultivated in the arboretum of
Mountain-Taiga station of FEB RAS. Higher indicators (96–97 points) have
Amelanchier spicata, A. alnifolia, Aronia melanocarpa, Physocarpus opulifolia,
P. monogynus, P. capitatus, Prunus americana, Rubus odoratus, Rubus occiden
talis. Quite perspective (82–90 points) are Cerasus besseyi, Crataegus flabellate,
C. macracantha, C. rotundifolia, C. submollis, Padus pensylvanica, P. serotina,
P virginiana, Rosa nutcana, Sorbus americana. Less perspective (67 points) and
demanding further study is Rosa Palnstris.