THE ORNAMENTAL PLANTS — TREES 329 



Weeping willow, S. Babylonica. 



To be planted sparingly, preferably near water; the sort known as the 

 Wisconsin weeping willow appears to be much hardier than the common 

 type; many forms. 



White willow, S. alba, and various varieties, one of which is the Golden 

 willow. 



Tree willows are most valuable, as a rule, when used for temporary plan- 

 tations or as nurses for better trees (p. 42). 



Laurel-leaved willow, S. laurifolia.% 



A small tree used in cold regions for shelter-belts; also a good ornamental 

 tree. See also under Shrubs (p. 301). 



Sassafras, Sassafras offi,cinalis.*'\ 



Suitable in the borders of groups or for single specimens; peculiar in 

 winter; too much neglected. 



Rowan or European mountain ash, Sorhus Aiuyuparia (Pyrus 



Aucuparia).l 

 Service-tree, S. domestica. 



Fruit handsomer than that of the mountain ash and more persistent; 



small tree. 



Oak-leaved mountain ash, S. hybrida (S. quercifolia). 



Small tree, deserving to be better known. 



Bald cypress, Taxodium distichum* 



Not entirely hardy at Lansing, Mich. ; often becomes scraggly after fif- 

 teen or twenty years, but a good tree; many cultural forms. 



American linden or basswood, Tilia Americana.*-\ 



Very valuable for single trees on large lawns, or for roadsides. 



European linden, T. vulgaris and T. platyphyllos {T. Buropma of 

 nurserymen is probably usually the latter). t 

 Has the general character of the American basswood. 



European silver linden, T. tomentosa and varieties.! 



Very handsome; leaves silvery white beneath; among others is a weep- 

 ing variety. 



American elm, Ulmus Americana.* f 



On£ of the most graceful and variable of trees ; useful for many purposes 

 and a standard street tree. 



