628 ARBORETUM ET FRUTICETUM BRITANNICUM. 



Persia, and apparently indigenous in Italy. Height 100ft. to 150ft. In- 

 trod. 1758. Flowers red ; March and April. Decaying leaves yellow. 

 The Lombard} 7 poplar is readily distinguished from all other trees of this 

 genus by its tall narrow form, and by the total absence of horizontal 

 branches. The trunk is twisted, and deeply furrowed ; and the wood, which 

 is small in quantity in proportion to the height of the tree, is of little worth 

 or duration, being seldom of such dimensions as to admit of its being sawn up 

 into boards of a useful width. The leaves are very similar to those of 

 P. nigra, and the female catkins to those of P. monilifera ; the male catkins 

 resemble those of P. nigra, and have red anthers, but are considerably more 

 slender. One difference between P. fastigiata and P. nigra is, that the for- 

 mer produces suckers, though not in any great abundance, while the latter 

 rarely produces any. P. fastigiata, also, in the climate of London, protrudes 

 its leaves eight or ten days sooner than P. nigra. The rate of growth of 

 P. fastigiata, when planted in a loamy soil, near water, is very rapid. In the 

 village of Great Tew, in Oxfordshire, a tree, planted by a man who, in 1835, 

 was still living in a cottage near it, was 125ft. high, having been planted about 

 50 years. 



12. P. ANGULA'TA Ait. The angled-branched, or Carolina, Poplar. 



Identification. Ait. Hort. Kew., 3 p. 407- ; Michx. N. Amer. Sylva, 2. p. 224. ; Pursh Sept., 2. 

 p. 619. 



Synonymes. P. angulbsa Michx. Fl. Bor. Amer. 2. p. 243. ; P. heterophylla Du Hoi Harbk. 2. 

 p. 150. ; P. macrophylla Lodd. Cat. edit. 1836 ; P. balsamifera Mill. Diet. No. 5. ; Mississippi 

 Cotton Tree, Amer. 



The Sexes. A plant at Ampton Hall, Suffolk, and one in the London Horticultural Society's arbo- 

 retum, are both of the male sex. 



Engravings. Michx. North Amer. Sylva, 2. t. 94. ; Du Ham. Arb., 2. t. 39. f. 9. ; the plates of 

 this tree in Arb. Brit., 1st. edit., vol. vii. ; and our Jigs. 1504. and 1505. 



Spec, Char., $c. Bud not resinous, green. Shoot angled, with wings. Disk 

 of leaf ovate, deltoid, acuminate, toothed with blunt teeth that have the 

 point incurved, glabrous : upon the more vigorous shoots, the disk is heart- 

 shaped, and very large ; branches brittle. (Michx.} A large tree. Virginia, 

 Florida, and on the Mississippi, in morasses, and on the banks of rivers. 

 Height 70 ft. to 80 ft. Introduced in 1738. Flowers reddish or purplish ; 

 March. Decaying leaves greenish yellow. 



1504. P. angulkta. 



Varieties. 



P. a. 2 nova Audibert. Hort. Soc. Garden in 1836. 

 t P. a. 3 Medusa Booth. Hort. Soc. Garden in 1836. 



The shoots of this species, when young, are extremely succulent ; and, as 

 they continue growing late in the summer, they are frequently killed down 

 several inches by the autumnal frosts. After the tree has attained the height 

 of 20 or 30 feet, which, in the climate of London, it does in five or six years, 

 this is no longer the case ; because the shoots produced are shorter and less 

 succulent, and, of course, better ripened. According to Michaux, the leaves 



