191' 



THE NATIVE WALNUTS OF CALIFORNIA 



57 



1. Juglans Californica Wats. Proc. Am. Acad. 10:349 (1875), as 



to the Southern California plants. Dr. Watson had only South- 

 ern California material before him and the southern walnut is 

 in consequence taken as the type of his species. 



2. Juglans Hindsii Jepson, in Smith, Univ. Cal. Agr. Exp. Sta. 



Bull. 203:27 (1909). J. californica Wats. var. Hindsii Jepson 

 in Bull. S. Cal. Acad. Sci. 7:23 (1908). This species was so 

 named in memory of Richard Brinsley Hinds, botanist of the 

 British exploring' ship "Sulphur," who first discovered it on 

 the banks of the Sacramento River in 1837. 



(jk^ 



Fig. 28. This illustration shows the relative size of the 

 nuts of the two California species of walnuts. Note at a 

 the small walnuts of the Southern California Walnut, 

 Juglans Californica, with their longitudinal channels. The 

 nuts marked b show the smoother-surfaced nuts of Juglans 

 Hindsii of Central California. In both the husks have 

 been removed. For the photograph the writer is indebted 

 to the courtesy of Professor E. B. Babcock. Nearly na- 

 tural size. 



