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Plate IV 



A Chestnut from the Mountains of Southwestern China Cas- 

 TANEA SP.; S. P. I. No. 56380 



In recent years the common chestnut, formerly a conspicuous feature of forests and road- 

 :n the northeastern United States, has almost disappeared, owing to the ravages of 

 chestnut blieht (Endothia parasitica), a disease for which no remedy has been disc 

 In an effort "to obtain blight-resistant chestnuts the Department of Agriculture has intro- 

 duced from China a number of interesting species. The one here shown is a large tree, about 

 100 feet tall, with a trunk 5 feet in diameter. The edible nuts are small, but J. F. Rock. 

 through whom the introduction has been made, reports them to be of sweet flavor. 1 Photo- 

 graphed bv J. F. Rock, near Shiaoshuichi. Yunnan, China. September 29, 1922; P3 



