DECIDUOUS TREES USEFUL IN LANDSCAPE FORESTRY. 101 



the familiar Apple and Pear, the Rowan, and the Service tree, 

 there are a number of beautiful-foliaged species, well adapted for 

 the purposes of the planter for landscape effect. These are all 

 perfectly hardy, and, under ordinary circumstances, produce 

 striking specimens, as conti'asted with the more sombre tints of 

 the ordinary deciduous ti'ees. Several of the finest, with their 

 varieties, are indigenous to this country, while America, and the 

 northern parts of Europe, contribute a number of very interest- 

 ing forms, all of which are of much service to the ornamental 

 planter. 



The Oak (Qnercus). 



Remarkable for the great range of their distribution over the 

 world — almost every country producing its representatives — the 

 wondrous divei'sity of foliage in the various species and varieties, 

 the facility with which they can be cultivated in this country, 

 and the great value of their timber, give to this gi'oup an 

 interest of a very peculiar kind. Few ti'ees are more ornamental, 

 whether in youth or age, even in their normal state, and none 

 are more beautiful in form and colour of foliage than the numerous 

 varieties which now exist, and which, from time to time, are 

 being added to our collections. 



The Sumach (lihus). 



This is an extensive genus of evergreen and deciduous trees, 

 inhabiting a wide area in the temperate and warmer regions of 

 both hemispheres ; very varied in their habits and general 

 aspects, and for the most part are exceedingly handsome. Com- 

 paratively few of the species, however, are hardy enough, to 

 withstand our climate, but those which can endure it are frequently 

 met with in our parks and ornamental plantations, where tbey 

 are much and deservedly appreciated. It may be added, that 

 all the species are more or less poisonous, and two, viz., B. 

 radicans and R. vernicifera, are so much so, that it is best to 

 avoid coming in contact with them. 



The "Willow (Salix). 



Of this very extensive genus, composed of shrubs from 2 inches 

 in height to trees upwards of 90 feet, it is unnecessary to give a 

 description. There are, however, a number of comparatively 



