3 UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 179 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief - 
_ Washington, D. C. PROFESSIONAL PAPER April 2, 1915 
NATIVE AMERICAN SPECIES OF 
PRUNUS 
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CONTENTS 
v1 Page 
mueiniroducdon  §. 2 fs etl 1 | Horticultural History and Develop- 
Srmeiination. 9 . . . - 4... se 1 MERE Fras Nee Wek os BA jel oh = Pheghlatete 6 
‘| Variation and Adaptability gli MT a 2 | Systematic Botany . ...- .-. » 17 
| = Early History of American Plams . . 2 | Literature Cited . . . . - 2. «2 e 73 
Early Botanical Descriptions . . .. 5 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1915 
we 
: 
