220 CUPRESSINE^. [part i. 



There are several species, but the other kinds 

 are too tender to bear British winters without 

 protection. The Norfolk Island Pine (A. excelsa) 

 is a splendid tree, with light feathery foliage ; 

 as is the Moreton Bay Pine {A. Cunninghami). 



§ IL CUPRESSIXE^.— THE CYPRESS TRIBE. 



Most of the plants contained in this section 

 are evergreen shrubs or low trees, but some of 

 them attain a considerable size. Only one 

 species, the deciduous Cypress, loses its leaves 

 in winter. Many of the species are only half- 

 hardy in Britain, and none of them are grown 

 in this country for their timber. They all 

 exude resin occasionally from their leaves and 

 branches, but none of them produce turpentine. 

 The catkins are but few flowered, and the cones 

 are roundish. The leaves are frequently imbri- 

 cated, at least when young ; though in many 

 of tho species they vary considerably, even on 

 the same tree. 



THE GENUS THUJA. THE ARBOR VITJE. 



There are several species of this genus, but 

 only two are common in British gardens. Of 

 these the American Arbor Vitse ( Thuja occiden- 

 talis) is the largest tree ; though it seldom 



