48 



TREES AM) SHRUBS 



Walnut. X'ogal. (Juglans major) 



The Walnut Trees (Juglans spp.j. This family contains 

 the well known walnut or nogal, the English walnut of com- 

 merce, the hickory nut, and the pecan. Only 'a single genus 

 occurs within our range, but the pecan is cultivated in a few 

 localities. There are at least two species of walnut in New 

 Mexico, and possibly a third. The two here recognized do 

 not occur together, so far as any records show. 



Juglans rupestris is a shrub which branches from the 

 ground and attains a height of about 10 or 15 feet. It rarely 

 shows any trunk, has narrow entire leaflets, and is to be found 

 along the Pecos and its tributaries from southeastern New 

 Mexico southward into Western Texas. In the latter region 

 it is more common and generally somewhat larger, but "still 

 retains its shrubby habit. The nuts of both species are small 

 for the genus, and the ridges are rounded and smooth. The 

 hull is thick and the kernel small. Juglans major has been 

 confused with this species, though in the original descriptions 

 Dr. Torrey separated them very clearly and assigned this 





