The Shade Trees of Denver. 
7 
A tentative list is given below of the kinds of trees which are 
foreign to the state that are known to be growing in Denver: 
Elm, American 
” Cork 
” Red 
Scotch 
Ash, Blue 
” Green 
” White 
European 
Weeping 
Mountain Ash, 
” Oak Leaved 
” Weeping 
Locust, Black 
Clammy 
” Honey- 
Honey Thornless 
Maple, Soft 
” Sugar 
Norway 
Sycamore 
Wiers Cut Leaf 
” Japan 
Black Walnut 
Butternut 
Horse Chestnut 
Buckeye 
Catalpa (Speciosa) 
(Bignonioides) 
Linden, American 
European 
Birch, White 
” Black 
” Weeping 
Oak, Red 
” Burr 
” White 
Swamp 
English 
” Pin 
Willow, Weeping American 
Weeping European 
Laurel Leaf 
Poplar, Carolina 
Lombardy 
Silver Leaf 
” Siberian 
Tulip, or Yellow Poplar 
Chestnut, Sweet 
Mulberry, Red 
” Russian 
” White 
Sycamore 
Hawthorn, sp. 
Hackberry 
Cherry, Black, of commerce 
Kentucky Coffee Tree 
Russian Olive 
Ailanthus 
Red Bud 
Persimmon 
Cucumber Tree 
Many of these kinds have not been tested long enough to war¬ 
rant further notice at this time, and not a few must eventually 
prove to be unsuited to our conditions. A few of the more promis¬ 
ing kinds, those that now show every indication of being of perma¬ 
nent value, have been selected for description and illustration: 
AMERICAN ELM. 
(Ulmus Americana L ) 
Few trees equal and probably none surpass the American elm for 
street planting in the Northeastern States, and trials have shown it to be 
one of the most desirable trees for this purpose in Colorado. There are 
several recognized forms or types of this tree, the commonest being the 
vase shaped type. This is specially suited to avenue planting, as the trunk 
divides some distance above the ground into numerous branches which 
gradually spread toward the tip and, as the tree acquires age, become 
more or less arched, thus producing that pleasing effect so noticeable in 
elm avenues of long standing. 
While pre-eminently an avenue tree, this elm is equally suited for 
planting about the home and in parks and public grounds. The top is 
usually carried high above the ground, especially when grown among other 
trees, thus furnishing shade without impeding free circulation of air. 
