LUTHER BURBANK 



The strains of this vine differ materially in 

 different localities, there being one in particular, 

 named the Engdmanni, which clings to walls and 

 trees better than the ordinary varieties. Vines of 

 this variety are also far ahead of others in their 

 rapidity of growth and in the beauty of their foli- 

 age, and especially in their autumn coloring. Some 

 varieties hold their foliage nearly a month longer 

 than others. 



These variations should be borne in mind in 

 selecting plants for the covering of walls or making 

 of arbors. The vines growing wild in Colorado 

 are, in my opinion, much superior to those of the 

 eastern states. 



I have raised thousands of seedlings of both 

 species of Ampelopsis just named, and many speci- 

 mens of other species known respectively as A. 

 heterophyla and A. arborea, and have attempted 

 to hybridize them, but only recently succeeded. 



The Japanese Ivy and the Virginia Creeper 

 have now been crossed by me, and it is expected 

 that the combination will produce varieties of 

 priceless value, giving opportunity for the develop- 

 ment of new races or ornamental vines to add to 

 the comparatively limited number now available. 

 The work is being carried forward on a large scale. 

 It is probable that the Ampelopsis and the grape 

 may be brought into combination. 



[216] 



