EVERGREEN TREES AND SHRUBS. 
565 
ground, and from twenty to forty feet high. Even without clipping, 
it grows in a form almost perfect for high hedge screens, and bears 
the shears so well, that it may easily be kept to the height of three 
or four feet. It is beautiful in any form it is made to assume. 
The foliage has a bright green tone, which is slightly browned by 
the cold in winter. Fig. 179 is the usual form of specimens grow¬ 
ing on exposed hill-sides. 
Parsons’ Arbor-Vim:. Thuja occidentalis comp acta. —This is 
a beautiful sport of the native sort, of a golden-green tone, and 
globular form, nearly as broad as high. The warmth and bright¬ 
ness of its color are conspicuous. Its growth is slower, broader, 
and more compact, than the American or Siberian. 
Hovey’s Arbor-Vim. Thija occidentalis hoveyii. —A pretty 
seedling of the common arbor-vitae, of dwarf habit, globular form, 
and warm green color. 
The Siberian Arbor-Vitve. Tlmja siberica. — This most 
beautiful tree of the family has come among us in such a mysterious 
way, that even our indefatigable amateur arboriculturist, H. W. 
Sargent, does not seem sure of its origin or relationship. It greatly 
resembles the American arbor-vitas in all its good qualities, but has 
a more velvety tone of color, is broader in proportion to its height, 
and probably a lower tree or bush at maturity ; perfectly hardy, 
always beautiful, and regarded either as an evergreen shrub or 
small tree, unites more good qualities for common use than any 
other we know of. Josiah Hoopes, in his Book of Evergreens, 
claims it as a variety of the American arbor-vitae. 
The Tartarian Arbor-Vit/e. Biota tartai'ica (B. pyrami- 
dalis ).—It is doubtful if it offers features distinct enough to distin¬ 
guish it at sight from the varieties of the American and the Siberian 
arbor-vitaes. Form compact, pyramidal; foliage dark; hardy. 
The American Golden Arbor-Vlive. Thuja occidentalis 
aurea. —A seedling brought to notice by IT W. Sargent, Esq., which 
he describes as having its new growth very distinctly yellow, the 
old foliage of a bright, clear green, both blending to form a most 
pleasing little tree, or shrub, and perfectly hardy. 
