CONE-BEARERS. 27 



AMERICAN NUT-PINES. 



Cones sub-globose, \\ to 2 inches thick; scales few, 

 very protuberant, without prickles, widely opening at 

 maturity, loosely holding the large, delicious seeds. 



No. 3-Nevada Nut Pine 



P. monophylla, Torr. and Frem. 



Small, branching trees of the Great Basin, the 

 eastern slopes of the Sierra and the Tehachapi and 

 San Bernardino Mountains; leaves solitary, robust, 

 terete, sharp-pointed; seeds large, soft shelled. (The 

 only single-leaved pine known.) 



No. 9 New-Mexican Pinyon - P- eduiis, Engeim. 

 Small trees of Colorado and southward through 

 New Mexico and eastern Arizona to western T'exas. 

 Headquarters in New Mexico. Branching trees with 

 small, few-scaled cones and very nutritious seeds; 

 leaves slender, mostly in twos; the seeds largely col- 

 lected for export to California, southern and eastern 

 markets. (Perhaps only a variety of the preceding.) 



MEXICAN PINYONS OR NUT-PINES. 



Cones globose and seeds much like the preceding. 

 (Not strictly in our northwest development, but 

 partly included.) 



