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; Aiseculus Hippocastanum; Tilia Americana, Europea, 
