THE NEW TREE BEAUTY 263 



screen or wind break. The Aspen, the leaves of which 

 are always in motion owing to the peculiar way in which 

 they are set on, is Populus tremula ; pendula is a weeping 

 variety of it. P. balsamifera is the Balsam Poplar. 



The Lime, Tilia, should be passed over altogether as a 

 garden tree ; and so should the common Elms, Ulmus 

 montana (Scotch) and U. campestris (English). They 

 are strong rooters and greedy feeders, robbing garden 

 plants of much-needed food. Alba (syn. argentea) is the 

 white Lime and Americana the American. If any Elm 

 is planted, it might be the weeping form of the Scotch, 

 montana pendula, on the pyramidal (f astigiata) . Dam- 

 pieri aurea is a good variety of the English. 



Smaller kinds of tree, as we saw in the chapter on 

 Herbaceous Borders, are of great value in flower-gardens, 

 and it may be well to collect in alphabetical order here 

 the names of the best. 



The Tree of Heaven, Ailanthus glandulosa, has large, 

 pinnate leaves that is, leaves in which several leaflets 

 grow from the sides of a common footstalk and orange- 

 scarlet, Ash-like fruits. It is graceful and a slow grower, 

 except when planted in deep, heavily manured soil. 



The Almond, Prunus Amygdalus, is planted for its 

 early bloom, and earliest of the early is the variety 

 persicoides, which is one of the first trees to flower in 

 spring. The Bitter and the Sweet Almonds are varieties 

 of the common, and so are alba and macrocarpa ; the 

 latter is remarkable for its very large fruits. See also 

 remarks under Prunus. 



The Service Berry, Amelanchier canadensis (syn. 

 Botryapium), is a good small tree, with white flowers in 

 spring, and brilliant leaves in the fall. There is a form 

 of this called oblongifolia which makes a handsome bush, 

 for it flowers freely. 



