124 WILSON EXPEDITION TO CHINA 



mm. longa, leviter rugulosa; semina ovalia, solitaria, 3-3.5 mm. longa, 

 nigra, nitentia. 



Western Hupeh: Hsing-shan Hsien, thickets, alt. 1100 m., June 

 and October 1907 (No. 386). 



This ia a very remarkable plant with a dense covering of bristles on the stems 

 and with wing-like prickles extending the full length of the internodes similar to 

 those of Rosa sericea, var. pteracantha. We have seen specimens with ripe and 

 immature fruit only and the flowers are unknown to us. From lack of material 

 we cannot be sure to which section of the genus it belongs, but suspect it to belong 

 to Euzanthoxylum, as it seems nearly related to Z. Bungei Planchon; it is, how- 

 ever, apparently still closer to our new Z. pilosulum of which the flowers are also 

 unknown and may possibly turn out to be a variety of that species with the stipular 

 prickles strongly developed and the hairs of the branchlets changed into prickles. 



Zanthoxylum setosum Hemsley in Jour. Linn. Soc. XXIII. 107 

 (1886). 



Fagara setosa Engler in Engler & Prantl. Nat. Pfianzenfam. III. Abt. IV. 118 

 (1896). 



Kiangsi : Kiukiang plain, thickets and hedgerows, alt. 100-200 m., 

 July 27, 1907 (No. 1566; bush 1.5 m.). Western Hupeh: Ichang, 

 thickets and rocky places, alt. 30-1500 m., April 1907 (Nos. 2688, 

 2691; bush 1-2.5 m. tall) ; without locality, A. Henry (No. 1504, 1571). 

 Western Szech'uan : west of Kuan Hsien, cliffs, alt. 2300-2600 m., 

 June 1908 (No. 2690; bush 2.5 m., flowers yellow). Chekiang: 

 vicinity of Ningpo, 1908, D. Macgregor. 



This shrub is common on the cliifs and in thickets throughout Hupeh and 

 Szech'uan where it is colloquially known as Yeh-hua-chiao (wild Pepper). The 

 specimens before us vary considerably in amount of hairiness especially on the 

 leaves and some of them resemble Zanthoxylum Bungei Planchon, which is most 

 closely related to this species. By Engler this species had been referred to the 

 genus Fagara, but our material shows that it is a true Zanthoxylum with a perianth 

 consisting of one whorl only. 



Zanthoxylum imdulatifolium Hemsley in Ann. Bot. IX. 148 

 (1895). — Pritzel in Bot. Jahrb. XXIX. 421 (1900). 



Western Hupeh: Hsing-shan Hsien, cliffs, side of streams, alt. 

 600-1000 m., May 1907 (No. 2689; bush 2.5 m., flowers reddish); 

 without locality, A. Henry (No. 3938, type). Eastern Szech'uan: 

 Wushan Hsien, A. Henry (No. 5646). Shensi: " Km-san," 1897, 

 G. Giraldi. 



This species is comparatively rare and is well characterized by its pubescence 

 and by the undulate margins of the leaves. The young shoots are often sUghtly 

 pruinose and the degree of pubescence on the leaves varies considerably. The 



