OF ORNAMENTAL TREES. 181 



Corolla turbinate, oblique, entire. Female, 

 stigma 4-cleft. Capsule 2-celled, many-seeded, 

 bristly. 



1. P. ALBA, Linnceus. Leaves lobed, tooth- 

 ed, white beneath; lobes acute, flat. Stig- 

 mas four. Abele; white poplar. Native of 

 Britain. 



A tree formerly very popular, on account 

 of its rapid growth and lively foliage, but 

 which planters now often wish back again 

 to its native country, because of its great 

 propensity to throw up suckers ; still, where 

 this is not objectionable, as in towns as 

 street-trees, it will often be desirable. The 

 whole of the poplar tribe has strong claims 

 to be distinguished in a catalogue of street- 

 trees ; few things bearing the smoke and dirt 

 better. This species grows lofty and some- 

 what conical, with a gray bark ; and, with its 

 two-colored leaves, bears a good character 

 for beauty. 



Pieces of the two-year old wood, cut into 

 three to four inch pieces, and planted nearly 

 their whole length in a rather moist and 

 shaded spot, very early in spring, grow like 

 willows. 

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