THE ORNAMENTAL PLANTS — TREES 327 
Lombardy poplar, P. nigra, var. Italica. 
Desirable for certain purposes, but used too indiscriminately (p. 41); it is 
likely to be short-lived in northern climates. 
White poplar, abele, P. alba. 
Sprouts badly; several forms. 
Bolle’s poplar, P. alba, var. Bolleana. 
Habit much like the Lombardy; leaves curiously lobed, very white beneath, 
making a pleasant contrast (p. 218). 
Certinensis poplar, P. laurifolia (P. Certinensis). 
A very hardy Siberian species, much like P. deltoides, useful for severe 
climates. 
Wild black cherry, Prunus serotina.* 
European bird cherry, P. Padus. 
A small tree much like the choke cherry, but a freer grower, with larger 
flowers, and racemes which appear about a week later. 
Choke cherry, P. Virginiana.* 
Very showy while in flower. 
Purple plum, P. cerasifera var. atropurpurea (var. Pissardt). 
One of our most reliable purple-leaved trees. 
Rose-bud cherry, P. pendula (P. subhirtella). 
A tree of drooping habit and beautiful rose-pink flowers preceding the 
leaves. 
Japanese flowering cherry, P. Pseudo-Cerasus. 
In many forms, the famous flowering cherries of Japan, but not reliable 
North. 
There are ornamental-flowered peaches and cherries, more curious and 
interesting than useful. 
Wild crab, Pyrus coronaria* aud P. Ioensis.* 
Very showy while in flower, blooming after apple blossoms have fallen; 
old specimens become picturesque in form. P. Ioensis flore plenot (Bechtel’s 
Crab) is a handsome double form. 
Siberian crab, P. baccata.t 
Excellent small tree, both in flower and fruit. 
