130 HARDY CONIFEROUS TREES. 



TSUGA (Carribre). 

 THE HEMLOCK SPRUCES. 



Flowers monoecious ; males lateral ; females terminal. 



Cones terminal, pendent, almost spheroid, with persistent 

 scales. 



Seeds small, with obovate wing. 



Leaves linear, flat, stalked, and proceeding from prominent 

 cushions. 



Cotyledons varying from three to six. 



Evergreen trees or shrubs of great value for ornamental 

 planting. 



Tsugfa Brunoniana, Carri^ri. {Synonyms: Pinus 

 dujnosa, Don ; Pznus Brunontana^WsWich; Abies Brunoniana, 

 Lindley; Abies dmnosa, Loudon; A. cedroides. Griffs.) Eastern 

 and Central Himalayas. 1838. This may rightly be de- 

 scribed as the handsomest of the genus, though, unfor- 

 tunately, it is not generally hardy. When seen in a thriving 

 condition it forms a round-headed pyramid, the branches and 

 branchlets gracefully drooping towards the points, and thickly 

 furnished with leaves that are longer than those of any other 

 member of the family, and of an intense silvery hue under- 

 neath. Each leaf is about i inch long, flat, and serrulated, 

 particularly towards the point. The cones are produced 

 singly at the branch tips, and are almost similar in size and 

 shape to those of the better known T. canadensis. Being apt 

 to suffer from frost after having started into growth in spring, 

 this tree should always be planted in a position where vegetation 

 generally is late in commencing growth. Winter frosts have 

 little effect upon the tree ; it is the immature shoots of last 

 season or the present that suffer most. The rate of growth 

 under favourable circumstances is nearly i foot per year. 

 One specimen that I measured had attained to the height of 

 20 feet in nineteen years, and produced cones regularly. 



T, canadensis, Carri^re. The Hemlock Spruce, 



