DECIDUOUS TREES AKD SHRUBS. 35 



creating effects quickly. Most of them are Taluable as 

 single specimens on the lawn. They are objected to by 

 some, because sprouts come up from the roots. These 

 are not difficult to keep down. The Poplars are desir- 

 able for back-grounds, shade for stock-yards, and to plant 

 in out-of-the-way places. 



The White or Silver Poplar or Abele (P. alha) is 

 a fine tree with heart-shaped, dark-green, smooth leaves, 

 silvery white beneath, A. The Gray Poplar resembles the 

 preceding somewhat, but is more upright, and with leaves 

 not so green above, or so white beneath. 



Alba Nivea is a variety with larger leaves than the 

 type, but resembling it in other respects. All of these, 

 while valuable trees for ornament, are disposed to sprout 

 from the root. 



The LoMBARDY Poplar (P. dilatata) is the well-known 

 erect, spire-like species, growing rapidly, and possessing 

 peculiar value on account of its manner of growth, A. 

 The Necklace Poplar, or Cotton-wood (P. monilife- 

 ra), is a vigorous tree, with the young branches angled; it 

 has large leaves, and its catkins resemble a string of beads. 

 The Carolina Poplar is a vigorous ornamental shade 

 tree, A. A variety of this, named " Eugenie," is of 

 pyramidal habit and rapid growth, with handsome, yel- 

 lowish-green foliage. 



The Balsam Poplar (P. halsamifera) is a coarse, rank 

 grower of erect habit, with large, shiny leaves; it sprouts, 

 B, There are several handsome Weeping Poplars : 

 namely, the Weeping, Large American Aspen (P. grandi- 

 dentatapeyidula), a beautiful and very rapid grower, with 

 slender branches that droop gracefully to the ground; 

 valuable, B. Athenian Weeping Poplar (P. Grceca pen- 

 dula), a fine, weeping tree, with dark-colored catkins ; 

 and the Parasol de St. Julien, anew drooping variety from 

 France. The American Aspen (P. tremuloides) is a spe- 



