JUGLANDACE AE . — JUGLANS 185 



alt. 1300-2100 m., April, May, August and September 1907 (Nos, 

 389, 206; tree 10-16 m. tall, girth 1-2.5 m.); Fang Hsien, cultivated, 

 alt. 1300-2000 m., May, October 1907 (No. 390; tree 13-20 m. tall, 

 girth 2-3 m.); without locality, April 1900 (Veitch Exped. No. 330). 

 Western Szech'uan: west and near Wen-ch'uan Hsien, cultivated, 

 alt. 1300-2600 m., October 1908 (Nos. 1144, 1145; tree 13-25 m. tall, 

 girth 2-5 m.); Tachien-lu, cultivated, alt. 1300-2600 m., October 1908 

 (No. 1145'*; tree 13-26 m. tall, girth 2-5 m.). Yunnan: Mengtsze, 

 cultivated, alt. 1600 m., A. Henry (No. 10507). Chili: near Chan- 

 gU, October 1905, F. N. Meyer (No. 198) ; north and west of Peking, 

 mountains, 1913, F, N. Meyer (Nos. 35611, 35612, 35613, nuts only); 

 purchased in market, Peking, September 16, 1903, C. S. Sargent (nuts 

 only); Ming Tombs, north of Peking, October 6, 1905, J. G. Jack; 

 hills near Great Wall, Peking-Kalgan Road, October 5, 1905, J. G. 

 Jack. 



The common Walnut is generally cultivated in Hupeh and Szech'uan; its 

 nuts are valued for food, and the wood is used for making rifle-stocks. In Japan 

 it is only sparingly cultivated. Wilson nowhere saw trees that could be de- 

 clared spontaneous, and considers it highly improbable that Juglans regia is in- 

 digenous to China. 



In addition to the specimens enumerated we have before us commercial samples 

 of nuts from other parts of China, Mandshuria, and Gyantse in Thibet and others 

 from central Asia, Persia and Europe. No two samples are exactly alike; they 

 differ greatly in size, shape, sculpturing, and thickness of shell. The nuts pur- 

 chased in the market at Peking by C. S. Sargent are nearly globose, 2-2.3 cm. in 

 diameter and have a virtually smooth, thick shell; they agree very well with C. 

 De Candolle's description of his var. sinensis. In Wilson's No. 1144, from western 

 Szech'uan the nuts are 4-4.5 cm. in diameter and have a thin deeply pitted shell. 

 Between these extremes there is every conceivable gradation and we find it utterly 

 impossible to distinguish botanically any variety or form. The leaflets vary in 

 number from 5 to 9 and are rounded, obtuse, acute or acuminate, but in their 

 general appearance and character and in the characters of the shoot and fruit there 

 can be no mistaking the common Walnut for any other species. 



The characters on which Dode (1. c.) relies to distinguish many of his species 

 of Juglans may be of interest to pomologists, but they have absolutely no specific 

 value. 



Pictures of this tree will be found under Nos. 146, 536, 539, 546 of the collection 

 of Wilson's photographs and also in his Vegetation of Western China, Nos. 260, 

 261, 262. 



Juglans cathayensis Dode in Bull. Soc. Dendr. France, 1909, 47, 

 fig.; in Fedde, Rep. Spec. Nov. X. 298 (1911). — Wilson in Card. 

 Chron. ser 3, L. 189, fig. 88, t. (1911). — Bean, Trees & Shrubs Brit. 

 Isl., I. 664 (1914). 



Juglans mandshurica Skan in Jour. Linn. Soc. XXVI. 493 (pro parte, non 

 Maximowicz) (1899). — Pritzel in Bot. Jahrb. XXIX. 274 (1900). 



