TREE SPECIES. 39 
DWARKE MAPLE. 
The dwarf or mountain maple (lcer glabrum) is a small tree 
resembling the silver maple in appearance. It never reaches a diam- 
eter of more than a few inches and is often shrublike. Several 
clumps of it occur in Wright Canyon, southwest of Gering, Nebr. 
It is abundant in Sioux County, where it exhibits a tendency to come ° 
in on the bluffs after the pine is cut off. 
BOXELDER. 
The boxelder (Acer negundo) is common throughout Kansas and 
Nebraska. It occasionally predominates along the creeks, and in 
some places where the natural forest is extending it is the first tree to 
take possession of the ground. Reproduction often fails, however, 
because a very large percentage of the seed is sterile. The boxelder 
is generally a low, scrubby, short-lived tree, and suffers much from 
insects. The wood is weak, perishable, and of little worth. It is 
unfortunate that so many tree planters have been induced to set out 
this species. Almost any other is preferable. 
WILD CHINA. 
The wild china, or chinaberry (Sapindus marginatus), is a south- 
ern tree whose extreme northward extension, so far-as noted, is in 
Russell County, Kans. It is particularly abundant in Hodgeman 
County, but in this region does not attain a large size. The wood is 
strong, tough, and, when large enough, is valuable for implements and 
repairs. , 
BASSWOOD. 
According to Doctor Bessey, basswood (77lia americana) extends 
westward to Brown and Rock counties in northern Nebraska. It is 
not found in western Kansas. 
SHITTIM WOOD. 
Shittimwood (Bumelia lanuginosa), a southern species, comes just 
across the Kansas line, being found occasionally in Barber County. 
Only small specimens are found there, but not far south, in Okla- 
homa, trees 18 inches in diameter are reported. 
ASH. 
The red ash (Fraxinus pennsylvanica) and green ash (Fraxinus 
lanceolata) resemble each other so closely in Kansas and Nebraska, 
