THE ROMANCE OF OUR TREES 



very short tube. The remaining species (C. ameri- 

 cana) has a roundish nut contained in an open husk 

 with jagged almost fringed margins. This is a broad 

 shrub, from 5 to 12 feet tall, distributed from New 

 England southward to West Virginia and westward to 

 Mississippi, Arkansas, and South Dakota. These 

 native species of Hazel-nut have been neglected and 

 ought to be taken in hand for orchard culture. The 

 three Tree-hazels all have roundish nuts with thick, 

 hard shells and small kernels and need to be much 

 improved before they have value as nut-trees. The 

 Himalayan C. ferox and the Chinese C. tibetica have 

 spiny husks resembling those of the Chestnut and 

 are unpromising subjects for the nut growers. 



The two Bush-hazels of eastern Asia (C. heter- 

 opbylla and C. Sieboldii), each of which has several 

 recognized varieties, are worthy of passing notice. 

 Both are hardy in the Arnold Arboretum and will 

 some day play a part in nut culture in this country. 

 The first has leaves variable in shape, as its name 

 indicates, and an equally variable husk which is 

 laciniated and often crested but open at the summit 

 exposing the roundish, thick-shelled nut. It is a low 

 bush, seldom more than 6 feet high and usually less, 

 which suckers freely and is a particular feature of open 

 mountain slopes in Korea. It is also widespread 

 in Japan, the Amur region, Manchuria, and north- 

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