lO 



THE CANADIAN HOR TICTL TCRIS T. 



ceed admirably if given proper attention. They 

 belong to the genus Cupressus, and are closely 

 related to the Lawson's Cypress of California 

 and Oregon. All the varieties offered for sale 

 are forms of two species, Cupressus obtusa and 

 Cupressus pisifera, yet in some of the varieties 

 there is no resemblance to the species whatever, 

 and it is only when a variety " sports " that the 

 true parent is revealed. A few notes may help 

 to distinguish these species and varieties. 



thread-like pendulous branchlets. It is quite 

 hardy and thrives well (Fig. 1721). 



C pisifera squarrosa — This is the least valua- 

 ble of all the varieties of C. pisifera at Ottawa, 

 as it is not perfectly hardy. Every winter it is 

 more or less injured by sunscald, and on this 

 account it is seldom that a symmetrical speci- 

 men is found. It is of much more dwarf and 

 compact habit than the others, with short leaves 

 of a pale silvery colour. 



Fig. 1721. Cupressus Pisifera Filifera, in Arboretum at 

 Central Experimental Farm. 



Cupressus pisifera (Retinospora pisifera) — All 

 the Retinosporas are ornamental, and this and 

 its varieties form a very beautiful and varied 

 collection. It becomes a good sized tree in 

 Japan, but like its varieties it is more shrub-like 

 in its growth at Ottawa. It is of pendulous 

 form with bright green leaves and very graceful 

 habit. 



C. pisifera filifera — A very distinct and grace- 

 ful variety with drooping branches and slender 



C. obtusa — This is a native of the mountain- 

 ous districts of Southern Japan, and attains 

 there a height of from 60 to 100 feet. It is a 

 pretty tree, but the specimens at the Experi- 

 mental Farm have not developed enough yet to 

 determine whether it will make a symmetrical 

 tree here or not. The bright green of the up- 

 per surface of the leaves makes a fine contrast 

 with the glatKTOus shades underneath. 



C. obtusa aurea and C. obtusa gracilis aurea 



