BULLETIN 231] 



WALNUT CULTURE IN CALIFORNIA. 



205 



Paradox Hybrid Roots. It would seem at first thought that seed- 

 lings of some of the very large, wonderfully thrifty Paradox hybrid 

 walnut trees found in California should give an ideal root for the 



FIG. 26. Four-year-old Placentia tree on Paradox root. Trees shown in Figs. 27 and 



28 in the background. 



English walnut. In order to test this, nuts from many of these trees 

 have been planted by ourselves and others, the resulting seedlings 



