178 JOURNAL OF THE ARNOLD ARRORETl M [vol. ii 



MISCELLANEOUS GENERA 



X Juglans Bixbyi, nom. nov. = J. cincrca x Sieholdiana Bixby in 

 Am. Nut Jour. x. 76, fig. 5, nos. 2 and 3, fig. 7 (1919). 



In the autumn of 1918 Mr. Willard G. Bixby sent to the Arnold Ar- 

 boretum some wahmts with corresponding specimens of leaves gathered 

 near Bristol, Indiana, in the Walnut-grove of Mr, Alva Y. Cathcart. 

 These specimens came from trees raised about 16 or 17 years ago from 

 nuts of the Japanese Walnut trees on Mr. Cathcart's place, and grown 

 from nuts imported from Japan. The nuts, however, borne by these 

 seedlings proved to be different from those of the parent tree and were 

 mostly rough-shelled, resembling more or less those of the Butternut. 

 There can be hardly any doubt, as pointed out and proved by Mr. Bixl)y 

 in his detailed and well illustrated article cited above, that these trees 

 are hybrids between the Japanese Walnut and the native Butternut 

 which grows wild near Bristol. 



Considering the great variability of these seedlings, it docs not seem 

 feasible to draw up a general description of the hybrid. I refer to the 

 excellent illustrations given by Mr. Bixby and may state that from J. 

 Sieholdiana they differ in the more or less rough-shelled nut, the more 

 viscid-pubescent husk, while from J. cinerea they differ in the less deeply 

 and sharply ridged and sculptured nut. The leaves are sometimes more 

 like those of J. Sieholdiana as in No. 5 (in fig. 7 cited above), or more like 

 J. cincrca as in No. 2, which is intermediate in fruit and may be con- 

 si(h*red the type of this hybrid. Tlie leaves of the two species are so 

 similar and show considerable variation within each species, that it is 

 hardly possible to distinguish the hybrid forms from their parent species 

 by the leaves alone. 



I take pleasure in associating with this interesting hybrid which may 

 be the starting point of a race of improved varieties, the name of Mr. 

 Willard G. Bixby, who has done and is doing so much successful work 

 for the develoj)ment of the American nut-growing industry. 



X Juglans Bixbyi var. lancastriensis, var. nov. = J. cincrca x 



Sieholdiana var, cordijormis, — J. cordiformis X cincrca Bixby in Am. 

 Nut Jour. X. 82, fig. 6, 11 (1918). 



In general appearance the nuts of this hybrid arc similar to the rougher 

 forms of the preceding hybrid, liut they show the Influence of J. Sieholdi- 

 ana var. cordiformis Makino (J. cordiformis Maxim.) in the somewhat 

 compressed nut with a strongly elongated slender point. Mr. Bixby 

 has kindly sent us nuts of this form from a tree in the orchard of Mr. 

 J. F. Jones, In Lancaster, Pennsylvania, whit^h was raised from the seed 

 of the '*Hollinger Heartnut," a typical J. Sieholdiana var. cordiformis. 

 The ridges of the nut of this hybrid are almost as i)rominent and sharp 

 as those of the Butternut, but the shape of the nut is different. 



On page 82 or 83 of Mr. liixby's article, cited above, there occurs a 

 misleading statement probably due to some omission in copying the 



