A NATURAL HICKORY HYBRID 
This tree, which is believed to be a cross between the pecan (Hicoria pecan) and the shellbark 
hickory (H. laciniosa) is standing in a rich river bottcm 12 miles from Mt. Vernon, Ind. 
Like most first-generation hybrids, it is a vigorous and rapid grower, but perhaps for this 
very reason its leaves and branches are tender and succulent—at any rate it seems to 
attract all the insect pests in the neighborhood. ‘This is not always the case with hybrid 
trees, however, for many of them are superior to their parents. The immense size of the 
nuts which this hybrid bears can be judged from one which the man at the right of the 
picture holds in his hand; in Fig. 15 a single one of them is shown natural size. Photograph 
from the United States Department of Agriculture. (Fig. 12.) 
