NORTH-WEST MONGOLIA AND CHINESE DZUNGARIA. 413 
RUBUS CHAMJEMORUS, Linn. 
Drying swamp association, Petropolowsk on the Amil River. 
Distribution. In subarctic Europe, Asia, and America. In Europe south- 
wards to the Riesen-Gebirge. In America down to the Rocky Mts., and in 
northern Japan, Focke. 
RUBUS PURPUREUS, Bunge. 
No. 467. Associated with stunted Larch and Pinus forests on dry rocky 
slopes, Japsa Mts. near Bei Kem rapids. 
Distribution. N. China and Japan and west temperate Himalayas. 
DRYAS OCTOPETALA, Linn. 
No. 9. Dry summit of Kizil Taiga, where it is not too rocky and where 
the surface is even. 
Distribution. Temperate arctic and alpine regions in the Northern hemi- 
sphere. 
POTENTILLA FRUTICOSA, Linn., var. VULGARIS, Willd. 
No. 350. Open steppe in bottom оѓ the valleys of the Sistikem and 
Chuguchak Rivers. 
Distribution (of sp.). Throughout Europe and Asia extending as far south 
as the Himalayas, also in N. America down to California, Th. Wolf. 
POTENTILLA BIFURCA, Linn., var. TYPICA, Th. Wolf. 
No. 418. River terraces and desert parts of open steppe between flood- 
line of river and Larch-forest zone, Kamsara and Upper Bei Kem Rivers. 
Distribution. From Russia and Greece eastwards through Asia Minor and 
ersia into Turkestan and Mongolia and the Himalayas, 7h. Wolf. 
POTENTILLA BIFURCA, Linn., var, CANESCENS, Ledeb. 
No. 184. Ona low sandy plain in the valley of the Upper Irtish. 
Distribution (of variety). Central Asia, Th. Wolf. 
POTENTILLA SERICEA, Linn., var. DASYPHYLLA, Ledeb. 
No. 37. Dry desert hill-slopes of the western Tannu-ola Mts. and upland 
valley plateaus up to 2150 m. 
Distribution. From Russia extending eastwards to Kamtchatka and the 
Behring Straits, Th. Wolf. 
POTENTILLA VISCOSA, Donn. 
No. 465. Dry valley steppe near Ulu Kem when occasionally flooded. 
Distribution. Central Asia from the Ural Mts. to Manchuria, Th. Wolf. 
