DWARF MAPLE. 
87 
Doctor James, in about the latitude of 40°. In size and 
form, the leaves resemble the common currant, and are 
somewhat smaller than in the preceding ; they are smooth, 
and commonly 3-lobed, with very acute and narrow sinuses, 
which scarcely extend dow 7 n to the middle of the leaf ; the 
lobes are broader than long, blunt, and often subdivided 
into 2 or 3 lesser parts. The petioles are shorter than the 
leaves. The flowers about 6, in a short umbellate raceme. 
Stamens and linear obtuse sepals, quite smooth. Stamens 
about 8, with the same number of sepals. The wdngs of 
the fruit approach the size of those of the European Acer 
campestre , or a little shorter, but broader and more obtuse. 
Douglas also found the same species, (according to T. & 
Gray,) growing in the Blue Mountains of Oregon, which 
are about 40 miles east of the Oregon or Columbia River. 
We have not had an opportunity of figuring this species, 
the specimens being too imperfect. 
In regard to the geographical limits of the N. American 
Maples ; the A . dasycarpum , or white maple, so abundant 
along all the great western streams, also continues into the 
western prairies as far as the banks of the Arkansas, till, 
at length, stripped of its rich alluvial lands, it enters the 
arid plains of the far West. It is also met with on the 
banks of the Kansas and Big Vermillion river, west of the 
Missouri, accompanied by the Negundo aceroides , or Box 
Elder, which latter continues to the borders of the Platte. 
It is now much cultivated as a shade tree in the streets of 
our towns and cities, where it grow r s with rapidity, and is 
not attacked by insects. 
The Red Maple, (A. rubrum ,) which extends from the 
Gulf of Mexico to Canada, is also, according to Douglas, 
found west to the sources of the Oregon ; this fact, how- 
ever, we have not been able to corroborate. A variety with 
yellowish flowers, noticed by Marshall, is not unfrequent in 
