6 University of California Publications in Agricultural Sciences [Vol. 2 



form amoiiii' a lar<io number of seodlinjis of the Garden Grove 

 black walnuts. This was the third appearance of the form in 

 question. 



In the autumn of 3910, the writer arranged to have the nuts 

 from the various individual black walnut trees of the row in 

 Garden Grove gathered separately so that they might be planted 

 separately the following spring. The nuts were so gathered, but 

 unfortunately became mixed while in storage. Thus, although 

 about thirty specimens of the new form appeared, they were scat- 

 tered through the nursery and could be traced to no particular 

 tree or trees. This was the fourth appearance of the new form. 



In the autumn of 1911 other parties secured many of the 

 nuts from the Garden Grove trees and although a few aberrant 

 seedlings appeared in Tyler's seed beds, he was not certain which 

 tree produced them. This makes the fifth appearance of the 

 form. 



In 1912 the writer had the product of twenty-one of the 

 trees in the Garden Grove row gathered separately. Among the 

 sprouted seedlings of one tree six aberrant seedlings have already 

 appeared, making the sixth appearance. An additional appear- 

 ance of the new form has been reported. In this case a single 

 seedling appeared among those grown from a mixed lot of south- 

 ern California black walnut seeds from trees growing wild in 

 Santa Monica Caiion. The seeds were gathered in 1910, so that 

 the tree is now three years old. It resembles Disher's original 

 trees. 



From the foregoing account it is evident that the new form 

 has originated in at least three different localities. In two of 

 these, Santa Ana and Santa Monica cafions, the trees were in the 

 wild condition when the nuts were collected. The Garden Grove 

 trees comprise a boundary line planting between two farms. The 

 new form is not reported to occur in the wild and probably does 

 not so occur. However, it would no doubt thrive in the more 

 favorable areas now occupied by wild walnuts in southern Cali- 

 fornia. Seedlings of Disher's original trees have been observed 

 to suffer more from excess of moisture than from drouth. 



Walnut breeders and nurserymen have propagated the form 

 bv means of grafting. Frank A. Leil). of San Jose, has a 



