SI 



n Amur, well 



inic Gardens, 



ivitch tells us 



its fruit. It 



)tanic Garden 

 jrg, there is a 

 trunk, and 25 

 sia, we find a 

 !S than those 

 ibottsford kills 



uick shade is 

 ne of the best 



wide habitat ; 

 ive not tried. 



1 1 trees, in 

 ter of trunk ; 

 varieties, and 

 quality of the 

 rouble is the 

 em European 

 les very small 

 e find on the 

 )wth on very 

 f the Siberian 

 ;ept the wilS 



:s in Eastern 



Russia should be obtained, for theLC straight-trunked, drought- 

 resisting, white poplars are very important, both as timber and 

 ornamental trees. 



In the collection at Verrieres, near Paris, planted by the late 

 M. de Vilmorin, two varieties maintain this straight trunk. 



Of the erec^ forms of white poplar, that which we find in the 

 nurseries under the name of Bolleana, and said to be from Tash- 

 kent and Samarcand, seems the same as that at Busy Institute 

 introduced by Prof. Sargent, and described by me last year as a 

 species from Turkestan ; a deeply cut-leaved silver poplar, as erect 

 when young as a Lombardy ; a decided acquisition. J am told 

 by those who have been at Astrachan, that the common white poplar 

 along the Volga, from Tsaritsin to Astrachan, is upright like the 

 Lombardy, 



Such are the variations in poplar seedlings, that in dealing 

 with them we must consider that we are dealing with approxima- 

 tions. The P. alba and the P. alba nivea in the different Botanic 

 Gardens of Central Europe all differ somewhat. 



At Kew there is a grand specimen of alba pendula, three feet in 

 diameter of trunk ; a lofty tree of fine weeping form. There is 

 an alba pendula in the catalogues of Riga, and I think Metz, but 

 I have not seen it. 



P. MoNiLiFERA. — This is the most largely planted tree in 

 Northern and Eastern France, the most common country road- 

 side tree in Central Europe. Not only along the road-sides, but, 

 especially in France, along aU sorts of imaginary lines across the 

 fields we find it in single i s, with side branches trimmed up 

 and cut as they grow for faggots and even for sheep feeding. 

 Loudon queried as to whether it was introduced from Canada or 

 Virginia. At any rate Botanists seem to say it came from this 

 continent. This favorite tree, with some variation in form, is 

 our own native Cottonwood ; universally planted in the North- 

 western States, valued in Europe, scarcely known and never 

 planted, I may say, in this province. A most valuable, though an 



