1924] REHDER, LIGNEOUS PLANTS OF NORTHERN CHINA, II 215 



Amygdalus communis Bunge in M&n. Div. Sav. Acad. Sci. St. P€tersb. II. 



95 (Enum. PI. Chin. Bor. 21) (1833).— Non Linnaeus. 

 Persica Davidiana Carri6re in Rev. Hort. 1872, 74, fig. 10.— Bretschneider, 



Hist. Eur. Bot. Discov. China, 332, 860 (1898). 

 Prunus Persica a. Davidiana Maximowicz in Bull. Acad. Sci. St. P6tersb. 



xxix. 81 (1883); in M41. Biol. xi. 667 (1883). 



Chili: "Chin, bor.;" ex Herb. Bunge (Gray Herb.); Hsiao Wu tai shan, 

 Shui shih tao, alt. 1500 m., J. Hers, no. 2180, October 8, 1922; Po hua shan, 

 J. Hers, no. 1658, September 9, 1921; Peking, used as stock in Peking 

 nurseries, C. S. Sargent, September 19, 1903; Peking, German cemetery, 

 planted, F. N. Meyer, no. 1396, May 24, 1914.— See also Franchet, 1. c, 

 Bretschneider, 1. c, and Maximowicz, 1. c. 



Honan: Sung hsien, Shih tze miao, alt. 1200 m., J. Hers, no. 588, May 

 26, 1919; Hwei hsien, Shansi border, J. Hers, no. 760, June 19, 1919. 

 See also Hers, 1. c. 



Shansi: near Hsi po po, F. N. Meyer, no. 1873, July 10, 1914; Nan 

 yang shan, alt. 1500-2000 m., J. Hers, no. 2741, September 22-30, 1923. 



Shensi: Yenan fu, W. Purdorn, no. 347, 1910. — See also Maximowicz, 

 1. c, and Koehne, 1. c. 



Kansu: P. «/. PiasezJci (ex Maximowicz, 1. c). 



Distribution: also Kweichou, Yunnan (ex Koehne, 1. c). 



Prunus Davidiana f. alba Bean in Garden, l. 165, fig. (1896). 



Persica Davidiana alba Carriere in Rev. Hort. 1872, 76. 



Chili: cultivated at Peking (ex Bretschneider, Hist. Eur. Bot. Discov. 

 China, 860 [1898]). 



Prunus Davidiana var. Potanini, comb. nov. 



Prunus Persica var. Potanini Batalin in Act. Hort. Petrop. xn. 164 (1892). 



Bretschneider, Hist. Eur. Bot. Discov. China, 1027 (1898).— Koehne in 



Sargent, PI. Wilson, i. 275 (1912).— F. N. Meyer in U. S. Dept. Agric. Bur. 



PI. Indust. PI. Immigr. cvi. 858, no. 39899, pi. (1915). 

 Amygdalus Persica Potanini Ricker in U. S. Dept. Agric. Bur. PI. Indust. 



Invent. Seeds PI. Imp. xlii. 34, no. 39899 and p. 51, nos. 40007-40009, 



pl. (1918). 



Kansu: near Schu tsai tze, F. N. Meyer, no. 1987, October 29, 1915. 

 See also Batalin, 1. c, Koehne, 1. c, Meyer, 1. c, and Ricker, 1. c. 



Besides the specimen cited above I have seen flowering specimens from 

 trees cultivated at Chico, California, and raised from seed sent by Meyer; 

 these and the fruits sent by Meyer show that the plant is a variety of P. 

 Davidiana and not of P. Persica. 



Prunus tangutica Koehne in Sargent, PI. Wilson, i. 276 (1912). 



Amygdalus communis var. tangutica Batalin in Act. Hort. Petrop. xn. 163 



(1892). 



Amygdalus tangutica Korshinsky in Bull. Acad. Sci. St. P6tersb. s6r. 5, xiv. 

 94 (1901).— F. N. Meyer in U. S. Dept. Agric. Bur. PI. Indust. PI. Immigr. 

 cvi. 854, no. 39898, pl. (1915); in U. S. Dept. Agric. Bur. PI. Indust. In- 

 vent. Seeds Pl. Imp. xlii. 51, nos. 40010, 40011 (1918). 



Kansu: Min chow, alt. 2600-3000 m., W. Purdom, no. 1029, 1910 

 e also Koehne, 1. c, Batalin, 1. c, Korshinsky, 1. c, and Meyer, 1. 



