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Fruiting Branch of a New Disease-Resistant Chinquapin from China. 

 (Castanea seguinii Dode, S. p. I. No. 45949.1 



Three important facts haA e been established in regaid to the chestnut bark disease: First, thai all 

 species of Castanea are net equally susceptible to the fungus: second, that hybrids between the 

 different species are fertile; and, third, that thefactor which produces ininiunity, whate\ erthatis, 

 appears to be heritable and by breeding and selection can be incorporated wiihoilier characters 

 such as size and quality of the nut, size of the tree, etc. This Chinese chinquapin, occurring near 

 Ichang, is a shrubby species, occasionally growing to -10 feet in height. Frank N. Meyer, who dis- 

 covered the chestnut bark fiuigus, Endoihia parasitica, in China, reports this species as apparently 

 totally resistant to the disease. It grow s w ell on barren mountain slopes but appears to be more 

 moisture loving than the chestnut, Castanea viollissinia. Introduced primarily for breeding pur- 

 poses. (Photographed by Frank N. Meyer, Tzewuhsien, .Shensi, China, September 1. 1914; 

 ■ P12248FS.) 



