402 



THE BOOK OF GARDENING. 



Pninus (C.) Pseiido-Cerasiis^ a small Cherry, with pretty rose- 

 coloured flowers; useful for small gardens. P. (C.) P.-C. James H. 

 Veitch, a recently-introduced Japanese tree, is a grand acquisition 

 to spring-flowering trees. It is quite a fortnight later than the 

 last-named in coming into flower, and differs from it also by 

 reason of its greater floriferousness and larger and deeper- 

 coloured flowers, which are borne in dense pendulous trusses. 

 The bronze-green foliage gives additional beauty. P. (C) penii- 

 ■sylvanica (Fig. 259) has long been cultivated in this country; it 

 freely produces clusters of white, Hawthorn-like flowers in May. 

 Few ornamental Cherries are more delightful than P. serrulata 

 {C. Siedoidi), with its double white flowers, suffused with pink, 



and borne in terminal 

 clusters on well-ripened 

 spurs along the old wood ; 

 it is of stout growth, and 

 in rich soil grows to a 

 height of from 15ft. to 

 20ft. 



Ptelia trifoliata 

 AUREA is a handsome, free- 

 growing, small tree, with 

 pale yellow leaves set on 

 long footstalks ; it is quite 

 hardy, and when planted 

 in sandy soil, with full 

 exposure to the sun, the 

 rich colouring is seen to 

 advantage. P. trifoliata 

 (Hop-tree) is of free growth, 

 and when carrying its crops 

 of seeds in autumn is 

 efl'ective. 



Pterocarya caucasica 

 (Caucasian Walnut) suc- 

 ceeds admirably in damp 

 soils, and grows to a height 

 of about 30ft., forming a 

 freely - branched, round - 

 headed tree, with deep 

 green leaves composed of from fifteen to nineteen leaflets. It 

 is useful for towns, and should be pruned to a single stem 

 when young, as it is apt to branch freely close to the ground. 

 P. stejioptera and P. rhoifolia are very ornamental trees. 



Pyrus. — This genus contains many treasured spring-flowermg 

 trees and shrubs, and a good use should be made of them in 

 parks and gardens. The freedom with which their delicately-tinted 



