CHAPTER II 



WALNUTS 



OUR native North American walnuts include sev- 

 eral well-defined species and in addition several kinds 

 about which there is dispute in regard to the ques- 

 tion of variety rather than species. For the pur- 

 poses of these notes we may leave out points in con- 

 troversy and make comments upon walnuts which 

 are of immediate importance from the orchardist's 

 point of view. Among these we have the butternut, 

 Juglans cinerea; the black walnut, Juglans nigra, 

 and its near relatives, the California walnut, Juglans 

 call-formed, the Texas walnut, Juglans rupestris, and 

 the Arizona walnut, Juglans major. From abroad 

 we have brought the Persian walnut, Juglans regia; 

 a Chinese walnut named Juglans sinensis, but now 

 held to be only a varietal form of Juglans regia , 

 and two Japanese walnuts, Juglans Sieboldi with its 

 varietal form, Juglans cordiformis. 



PERSIAN WALNUT 



The name Persian walnut for designating Juglans 

 regia has been chosen in order to avoid confusion 

 that goes with such names as French walnut, Eng- 



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