128 WILSON EXPEDITION TO CHINA 



ened and dilated at their base. All parts of the tree emit a very pungent odour 

 when bruised. The branchlets are much less spiny and more slender but much 

 more woody than those of the allied Zanthoxylum ailanthoides Siebold & Zucca- 

 rini. In that Japanese species the inflorescence differs in its much longer peduncle. 

 The characters by which Pampanini distinguishes his Fagara Biondii do not 

 hold good in the material before us and we are unable to separate it from the 

 typical form of Zanthoxylum micranthum Hemsley. The inflorescence on our 

 specimens varies in diameter from 10 to 30 cm. and although the leaves ex- 

 hibit slight variations the species is extremely well-marked. Colloquially it is 

 known as the Tz'u-chin-shu. It is the only species of Zanthoxylum in central 

 and western China known to us which becomes a tree. 



Zanthoxylum echinocarpum Hemsley in Ann. Bot. IX. 149 (1895). 



Fagara echinocarpa Engler in Engler & Prantl, Nat. Pflanzenfam. III. Abt. 

 IV. 118 (1896). — Pritzel in Bot. Jahrh. XXIX. 422 (1900). 



North-central Szech'uan: Pa Chou, cliffs in sandstone ravines, 

 alt. 600-1000 m., July 1910 (No. 4620; scandent bush 1-2 m. tall). 

 Western Szech'uan: Mt. Omei, October 1904 (Veitch Exped. No. 

 4773). Yunnan: Mengtze, mountains, south-west, alt. 1600 m., A. 

 Henry (No. 10932). Western Hupeh: Ichang and immediate 

 neighbourhood, A. Henry (No. 3416'', type). 



This is a remarkable species with a terminal and axillary racemose inflorescence 

 and one-seeded carpels densely clothed with long flattened, sparsely hairy spines. 

 It is not common and is confined to the warm temperate regions. 



Zanthoxylum dissitum Hemsley in Jour. Linn. Soc. XXIII. 106 

 (1886). 



Fagara dissita Engler in Engler & Prantl, Nat. Pflanzenfam. III. Abt. IV. 

 118 (1896). — Pritzel in Bot. Jahrh. XXIX. 422 (1900). — Pampanini in 

 Num. Giorn. Bot. Ital. n. ser. XVIII. 125 (1911). 



Western Hupeh: Ichang, glens, alt. 30-300 m., common, March 

 and September 1907 (Nos. 321, 2684; scandent shrub 2-4: m.); same 

 locality, June 1900 (Veitch Exped. No. 148); same locahty, A. Henry 

 (Nos. 3121, 3325, 3713). Eastern Szech'uan: Wushan Hsien, A. 

 Henry (No. 7 1Z7). Yunnan: Mengtze, mountains to the south- 

 east, alt. 1600-2000 m., A. Henry (Nos. 10429, 11437); Yuan-chiang, 

 alt. 1300 m., A. Henry (Nos. 13326, 13326'^). 



This handsome species is common at low altitudes through western Hupeh and 

 eastern Szech'uan, especially in glens and gorges. It forms a large subscandent 

 bush and has persistent shining-green leaves. The number of leaflets is usually 

 from 2 to 4 pairs but varies from 1 to 5 pairs; the leaf-rhachis is usually armed 

 with hooked prickles. The seeds are very large and jet black. In the Yunnan 

 specimens the panicles are rather longer than in the northern form. A colloquial 

 name in Hupeh for this shrub is " San-peh-pang." 



