458 Pomona College Journal of Economic Botany 



The Catalina cherry {Prmms intcgrifolia) , a native of Catalina Island, 

 makes a beautiful small tree with a spreading head and sufficient size to 

 warrant planting it on a small street. The foliage of this tree is a rich 

 glossy green ; the tree blooms profusely and produces a red cherry that is 

 rather attractive in appearance. 



The mayten tree {Maytenus boaria) grows to a medium height in a quiet, 

 modest way. Its foliage is fine, graceful and drooping, though rather sparse 

 and casting only a moderate shade. Its size would not be sufficient to balance 

 and harmonize with a wide street, but is enough for some of our more narrow 

 city ways. 



A tree that is sometimes seen along our roadways, but which in my esti- 

 mation might well be planted oftener, is the common olive {Olea europea). 

 It has a delicatenoss and softness of outline that seems to blend with and soften 

 the tone of almost any environment in which it is placed. It is very hardy, 

 drought and cold resistant, so that one need not be especially careful of the 

 locality in which it is planted. It makes a comparatively slow growth, but 

 is long lived, attaining an ultimate height sufficient for the ordinary street. 

 However, if the fruit is unpicked, its litter is very troublesome and dangerous. 



So much for varieties. There are faults that might be found with all 

 of the plants that have been here mentioned, althougli, judging from what 

 one commonly sees, many of us cannot be overdiscriminating in our choice of 

 street trees. Time only will tell us of that which, making a splendid growth 

 while young and seeming to be happily chosen at the time, may turn out to 

 be absolutely unworthy after a few years have given it an opportunity to 

 demonstrate its value. So, too, is it that the unpromising seedling may in the 

 end prove to be the best possible tree for the purpose. 



The accompanying half tones give some examples of good and bad 

 planting, and good and bad selection of road trees. And although it is 

 largely a matter of personal taste as to what is beautiful and what is not, 

 -^there seem to be certain requirements that a satisfactory tree must fill. 

 Careful consideration, deliberate judgment and common sense, if judiciously 

 used. Mill solve many of these hardest problems for us. 



