1923] REHDER, THE LIGNEOUS PLANTS OF NORTHERN CHINA 167 



Ulmus 



Mem 



Acad.Sci. St. Petersb. n. 135 (Enum. PL China Bor. 61) (1833).— Maxi- 

 mowicz in Mem. Div. Sav. Acad. Sci. St. Petersb. ix. 477 (Ind. FL Pekin.) 

 (1859).— Franchet in Nouv. Arch. Mus. Paris, ser. 2, vn. 78 (PL David. I. 



268) (1884). 



W 



Bailey 



Gent. Herb. i. 18 (1920).— Hers in Jour. N. China Branch R. As. Soc. 



Lin. 117 (1922); Liste Ess. Lign. Honan, 32 (1922). 



Ulmus campestris §. pumila Maximowicz in Bull. Acad. Sci. St. Petersb. 

 xvm. 290 (1873); in Mel. Biol. ix. 23 (1873).— Pritzel in Bot. Jahrb. xxix. 



298 (1900). 

 Ulmus campestris Hemsley in Jour. Linn. Soc. xxvi. 446 (1894), pro parte; 



non Linnaeus. 

 Chili: Weichang, W. Purdom, no. 96, 1910; Nankow, J. G. Jack, 



October 6, 1905; Shi wen, F. N. Meyer, no. 1069, August 2, 1913; Calceen 



wong, W. Purdom, no. 61, 1910; Hsiao wu tai shan, F. N. Meyer, no. 



1385, August 30, 1913; Peking, Temple of Agriculture, C. S. Sargent, 



September 15, 1905; near Peking, J. G. Jack, October 7 and 9, 1905; 



Wilson 



Mey 



M 



W 



Cowdry, no. 1014, September 26, 1920.— See also Bunge, 1. c, Franchet, 

 1. c, Maximowicz, 1. c, and Schneider, 1. c. 



Shantung: Chifu, C. S. Sargent, September 27, 1905.— See also Schnei- 

 der, 1. c. 



Honan: "the common Elm of the Honan plain," J. Hers, 1919. — See 



also Hers, 1. c. 



Shansi: near Tsin tse, F. N. Meyer, no. 416, May, 1907 (sterile; Herb. 

 U. S. Dept. Agric.) ; Wu chai hsien, Ta nan kow,alt. 2000-3000 m., Tchuang 

 Kieh, Hers no. 2043, September 7, 1922. 



W 



W \ Purdom 



See also Pritzel, L c. 



Distribution: also Kiangsi, Szechuan, Yunnan; Transbaikalia, Man- 

 churia, Korea. 



The specimens exhibit a wide variation in the size and shape of the leaves; 

 some of the vigorous shoots of Hers' specimens from Honan have oblong- 

 lanceolate leaves up to 10 cm. long, while Purdom's specimens from Tai 

 pei shan have rhombic-elliptic leaves 2-3.5 cm. long and pilose on the 

 midrib and partly on the veins beneath and the branchlets are thinly 

 appressed-pubescent as in Meyer's nos. 928, 1069 and 1385 from Peking. 

 In Meyer's no. 416 from Shansi doubtfully referred to this species, the 

 branchlets and petioles are short-villose and the young leaves are slightly 



<< _ -*/!--• : »» 



pubescent on both sides. Piasezki's specimens cited "ex Maximow 

 from Shensi and Kansu by Hemsley (1. c.) may belong here, but there is 

 no other evidence that U. pumila occurs in Kansu. 



