364 Selected Lists 



flowers (August, September), which in some varieties are changed to 

 white or blue, and aromatic, compound foliage, with long, narrow- 

 pointed leaflets. 



SELECTED LISTS FOR SPECIAL PURPOSES 



The following lists may aid in suggesting the selection of 

 plant material for special situations, and special purposes. 

 It must be understood that they are only suggestions calling 

 for more detailed inquiry in each case. Endurance of un- 

 toward conditions of soil or climate, for instance, is not an 

 absolute but a relative characteristic, and usually form and 

 character of growth are more or less influenced by the envi- 

 ronment. Hence while a species may endure in a given cli- 

 mate or in a dry or wet soil, it may not thrive and develop 

 its characteristic form. Altogether soil conditions and cli- 

 mate are so variable and exhibit so many gradations that it 

 is not always easy to judge how far a given species may be 

 suited. 



Where all species of a genus cited in the preceding lists 

 show the same characteristics, only the genus name is given. 



DESIRABLE STREET TREES 



The width of the street, besides the points discussed on 

 page 200, should be taken into consideration in selecting 

 trees, and the size which different trees ultimately attain 

 should also be borne in mind ; the narrower streets, if planted 

 at all, calling for smaller to medium-sized material. The 

 sequence indicates somewhat the relative values. 



Large-sized trees: Quercus rubra, coccinea; Platanus occidentalis, 

 orientalis; Ulmus Americana, campestris; Acer saccharinum, nigrum, 

 pseudo-platanus; ^^seculus Hippocastanum; Tilia Americana, Europaea, 



