94 THE CULTIVATED EVERGREENS 



Ottawa during the past thirty years, and some have been found 

 much more satisfactory than others in their abihty to withstand 

 chmatic conditions. Among the best of these are: Douglasii 

 ■pyramidalis, an attractive pyramidal variety, not so narrow 

 or columnar as fastigiata. It has very distinct foliage and is 

 one of the hardiest forms. Because of its general soft ap- 

 pearance, caused by its small foliage, and on account of its 

 having withstood severe tests well, Ellwangeriana is one of the 

 most satisfactory as a lawn specimen. It is really a semi-dwarf 

 with broad outline, and after thirty years is only about fifteen 

 feet high at Ottawa. Globosa is another reliable variety, well 

 named, as its outline is almost globose. This also is a semi- 

 dwarf, being only six feet high after thirty-three years at 

 Ottawa. It has never been injured by winter. Var. fastigiata 

 or 'pyramidalis is usually known as the pyramidal arbor- vitse 

 and is one of the most striking hardy evergreens. It is quite 

 columnar in habit — specimens at Ottawa thirty feet in height 

 are but six feet across at the base. Occasionally limbs of this 

 variety are injured in winter, but, as a rule, it is quite hardy. 

 Var. Vervwneana has proved reliable. It is more graceful in 

 habit than the species and a slower grower. It has yellowish 

 foliage which is not quite definite enough to make it specially 

 attractive on this account. Var. rohusta or Wareana, often 

 called the Siberian arbor-vitse, would seem to be even hardier 

 than the type as it has succeeded on the prairies where the 

 type or species did not. It is more compact than the latter, 

 with characteristic bright green foliage. Many other varieties 

 might be mentioned, none of which is as satisfactory as those 

 just described. The golden-leaved sorts are more attractive 

 when young than later. 



Western arbor-vitse or giant-cedar. Thuja plicata, is a very 

 beautiful tree when growing wild in the mountains of western 



