Abstract: Caragana sibirica Fabr. is a typical mesophytes, it is both a typical and original species of Caragana. The author suggests the present distribution pattern of C.sibirica Fabr. belongs to the discontinuous one from the southeast of Western Siberia (Altai-Sayan) to the north of Eastern Asia (North China-North East-Far East). In the southeast of Western Siberia, C.sibirica Fabr. is a companion species under the evergreen aciculisivae of frigidtherm type (taiga) composed of Larix sibirica Ledeb. and Abies sibirica Ledeb. and at the edge of it. In the north of Eastern Asia, it is a companion species under the broadleaf aestatisilvae of mesotherm type and thermophilic type composed of Quercus mongolica Fisch. ex Turcz. and Q. leaotongensis Koidz. and at the edge of it.

Key words: Caragana, C.sibirica Fabr., distribution pattern, ecological adaptation