74 THE BOOK OF SHRUBS 



species. The American Arbor Vitae (T. occidentalis) is 

 a small tree or large shrub of pyramidal growth and not 

 wanting in attractiveness. It is, however, not equal for 

 garden ornamentation to some of its numerous varieties. 

 The best of the green-leaved forms are: T. o.' Ellivange- 

 riana and T. o. Wareana, which are smaller in growth 

 and of better colour than the type. T. o. lutea and T. o. 

 Wareana aurea are the best of the golden-leaved forms. 

 The Chinese Arbor Vitae (T. orientalis) is of pyramidal 

 outline, but the growth is hardly so erect as in the species 

 immediately preceding it. T. o. decussata and T. o.funi- 

 culata are two beautiful green-leaved varieties, and T. o. 

 aurea and T. o. elegantissima are two effective golden 

 forms, the former globular in growth, and the latter 

 has a compact erect habit. 



WELLINGTONS. The well-known Wellmgtonla gigan- 

 tea, which rises to a height of 35 ^ eet m Sierra Nevada, 

 where the conditions are very favourable, is an ex- 

 cellent garden tree, although decidedly formal, where 

 soil and climate are favourable to its development. It 

 is of comparatively slow growth in Great Britain, and 

 many years elapse before it becomes too large for a 

 garden of moderate area. 



A deep loamy soil and shelter from easterly winds 

 are essential to success, therefore where the soil is 

 gravelly or a heavy clay, or the position exposed to 

 easterly winds, the Wellingtonia should not be planted, 

 because of the lower branches dying off at an early stage 

 and spoiling the appearance of the trees. 



