258 PHANEROGAMOUS PLANTS. 



Territories, as well as in New Mexico, Western Texas, and Utah. 

 The leaves and twigs are velvety pubescent, much more commonly 

 than smooth, as the species was described by Nuttall. 



Oed. 21. SAPINDACEJE. 



1. ACER, Tourn. 



1. Acer macrophyllum, Pursh. 



Hab. In forests and on banks of rivers, from Puget Sound south- 

 ward to San Rafael, California. — It attains its greatest altitude in 

 Washington Territory, where it is sometimes more than 80 feet 

 high, and, in some places, is almost the only deciduous tree. In 

 California it grows only about 30 feet high, with a trunk at most two 

 feet in diameter. 



2. Acer circinnatum, Parsh. 



Hab. Puget Sound, in wet ground. — Dr. Pickering found it occa- 

 sionally 30 or 40 feet high, but more commonly it grows in the 

 manner described by Douglas and Nuttall; the low trunk throwing 

 off from the base slender branches, which take root and form dense 

 thickets, and greatly obstruct the traveller. The popular name of 

 this species is Vine Maple, from its prostrate habit, and long slender 

 branches. The sepals are hairy externally, and of a dull purple color. 

 Petals orbicular or broadly ovate, half as long as the sepals. Disk 

 2-lobed. Ovary clothed with long hairs. 



