128 LANDSCAPE GARDENING. 



fined situations, as its branches require less lateral room than 

 almost any other large deciduous tree. It is an objection 

 to some of the poplars, that in any cultivated soil they pro- 

 duce an abundance of suckers. For this reason, they should 

 be planted only in grass ground, or in situations where the soil 

 will not be disturbed, or where the suckers will not be injuri- 

 ous. And, upon the whole, we conceive them to be chiefly 

 worthy of introduction in grounds of large extent, to give 

 variety to plantations of other and more valuable trees. 

 They grow well in alhiost every soil, moist or dry, and some 

 species prefer quite wet and springy places. 



The chief American poplars are the Tacamahaca or Balsam 

 poplar, {Populus halsamifera,) chiefly found in Northern 

 America ; a large tree, 80 feet high, with fragrant gummy buds, 

 and lanceolate-oval leaves ; the Balm of Gilead poplar, resem- 

 bling the foregoing, but with larger.flner, and more heart-shap- 

 ed foliage. From these a gum is sometimes collected, and used 

 medicinally for the cure of scurvy. The American aspen, [P. 

 trenmloides,) about 30 feet high, a common tree with very 

 tremulous leaves and greenish bark ; the large American as- 

 pen, {P. grandidejitata,) 4:0 feet high, with large leaves bor- 

 dered with coarse teeth or denticulations ; the Cotton tree, (P. 

 argentea,) 60or70 feet, with leaves downy in a young state ; 

 the American Black poplar, of smaller size, having the young 

 shoots covered with short hair ; the Cottonwood, (P. Cana- 

 densis^) found chiefly in the western part of this state, a fine 

 tree, with smooth, unequally-toothed, wide cordate leaves ; 

 and the Carolina poplar, (P. angidata,) an enormous tree, of 

 the swamps of the south and west, considerably resembling 

 the Cotton tree, but without the resinous buds of that species. 



Among the European kinds, the most ornamental, as we 

 have already remarked, is the Silver aspen, White poplar, or 

 Abele tree, (P. alba,) which grows to a great size on a deep 

 loamy soil, in a very short time. The leaves are divided into 



