APPENDIX M 



Dear Sir: Wi 

 botanical material b 

 mann, the geologist 



I herewith inch 

 ticular, and principa 



I expect to con 



Oapt J. II. Simpson, 



Topof/nijih'n nl Ei 



R< >SACEiE. 



Cercocarpus ledifolus, Nuttalt in Torre ij and Gray* Fl. X. Am. l,p. 427; and in 

 his continuation of Midlands Sylca, 2, p. 28, t. 51; Hooker, i. c. pi t. 324; Mountain- 

 Mtifoif/auy of the inhabitants of Utah. 



This small evergreen tree is so well described by Nuttall in both works mentioned 

 that not much remains to be added. His figure, however, is not a very faithful repre- 

 sentation. He says that it grows much like a peach-tree, at most 15 feet high, and 

 that the trunk is sometimes as much as a foot in diameter. On the expedition, it was 

 found to grow rarely as a tree, but usually branching from the base, or several stems 

 from one root; its height was from 8-15 feet, and the stems seen had the thickness of 

 3-6, or, at most, 10 inches. The bark is light gray, tough, smoothish, with superficial 

 longitudinal wrinkles and short transverse scars. The wood is liard, heavy, very close- 

 grained, light reddish-brown, witli white sap; medullary rays very numerous, but 

 extremely fine, scarcely visible with the naked eye; the wood is similar to cherry-wood, 

 but harder and heavier. A specimen before me has a diameter of 16 lines, 14 lines of 

 which are wood, showing 24 annual rings, so that each ring has a thickness of not 

 much more than ± line. The shoots, or longer branches, have a white, smooth bark, 

 with joints or internodes of about 1 inch in length. The leaves, however, are usually 



