148 JOURNAL OF THE ARNOLD ARBORETUM (vol. iv 



Honan: See Hers, 1. c. 



Distribution: western Asia, extensively cultivated in Europe and Asia. 



In China the fruit of this species is as variable as it is in Europe; it 

 varies in its shape from subglobose to oblong-ovoid and in size from 2 cm. 

 to more than 4 cm. long and it also varies in the thickness of the shell. 



Juglans mandschurica Maximowicz in Bull. Phys.-Math. Acad. St. 

 Petersb. xv. 127 (1856).— Hance in Jour. Bot. xm. 135 (1875).— Franchet 

 in Nouv. Arch. Mus. Paris, ser. 2, vn. 92 (PI. David. I. 282) (1884).— Skan 



in Jour. Linn. Soc. xxvi. 493 (1899). 



Juglans sp. Hers in Jour. N. China Branch R. As. Soc. Lin. Ill (1922). 



Chili: Huai lai shan, Yang kia ping, alt. 900 m., J. Hers, no. 2101, 





May 



tr. W 



Meye 



J. Hers, no. 1548, July 14, 1921 ; Peking, western hills, /. Hers, no. 2250, 

 October 14, 1922. — See Franchet, 1. c, Skan, 1. c. 



Honan: Tsi yuan hsien, Tien tan shan, J. Hers, no. 1711, September 20, 

 1921; Lu shih, Hiung eul shan, alt. 1400 m., J. Hers, no. 892, October 10, 



1919. 



Distribution: also Manchuria, Korea. 



I have seen no fruits of typical J. mandshurica from northern China. 

 Fruits from near Nankow Pass purchased by Hers and sent under No. 2467 

 are apparently intermediate between those of J. mandshurica and J. 

 Sieboldiana; they are small, between 2 and 3 cm. long, and globose-ovoid 

 to ovoid, some of them are nearly smooth, almost like those of J. Sieboldi- 

 ana, while some are distinctly ribbed and deeply pitted with ragged edges 

 like those of J. mandshurica, but most are intermediate between the two 

 extremes. Under no. 2250 Mr. Hers sent leaf specimens and fruits from 

 northwestern Chili; the leaves agree exactly with those of J. mandshurica, 

 but the fruits are large, globose-ovoid to oblong-ovoid, up to 4 cm. long, 



with irregular and often indistinct longitudinal ridges and are deeply 

 and irregularly pitted with rounded smooth edges. Nuts purchased in 

 Peking and sent under no. 2254 are similar; Mr. Hers states that they 

 are called "mahe tao" (horse nuts), take a fine polish and are used as 

 trinkets. Nuts received about 1880 from Dr. Bretschneider as J. man- 

 shurica are also similar but much less distinctly ridged and pitted. Under 



Mr 



very 



much like small nuts of J. Sieboldiana but these were, according to his 

 note, only those left on the ground after all the big nuts had been gathered 

 by the natives. Possibly J. mandshurica and J. Sieboldiana Maxim. 

 are only forms of one species exceedingly variable in its fruit. Certainly 

 except in the configuration of the shell of the nut no characters have been 

 discovered to distinguish J. mandshurica and «/. Sieboldiana. 



