i6o FLORA OF THE 



northerly aspect, and the slopes facing the south are 

 more often bare than wooded, and the same remark 

 applies to the southern parts of the range where 

 arboreal vegetation is most abundant. 



The chief kinds of trees are the aspen {Popuhis 

 tremula ?), black birch {Betula dattrica),^ and willow 

 (Salix sp.), the last-named growing in bushes and 

 trees twenty feet high ; the aspen attains a somewhat 

 greater height, while the black birch is in general of 

 lesser size. Among other trees we noticed in these 

 forests the white birch {Betula alba), poplar {Popiihis 

 laurifolia), alder [Almis sp.), mountain ash (Sorhis 

 Aucuparia), and apricot^ {Prunus sp.) ; an occasional 

 dwarf oak {Qiiercus Moiigolica) may be seen with a 

 trunk seven feet high, limes [Tilia sp.) of the same 

 dimensions, j'uniper {jf tiniperus commwiis), and thujas 

 {Biota orientalis), the last-named growing only in the 

 lowest tree-belt on the southern slopes of the moun- 

 tains. The absence of the spruce fir is a notable 

 circumstance. The commonest of the bushes is the 

 hazel {Ostryopsis Davidiana), attaining a height of 

 three or four feet and frequently covering the ex- 

 posed mountain sides with dense brushwood. We 

 also noticed the wild rose {Rosa aciciilaris), wild 

 raspberry {Ritbus IdcEUs), wild currant {Ribcs pul- 

 скеИгшг), guelder rose ( Vibiir7ium Opulus), dogwood 

 {Cornus sp.), buckthorn {Rhammis argiitd), Spircea 

 and Lespcdcza bicolor, so common in the woods of 

 the Southern Amur. 



" According to Loudon, Betula lenta is the lilack liirch. — 1\I. 

 ^ The apricot mostly grows on the bare mountiiin sides. 



