JUGLANDACEAE. — PTEROCARYA 181 



PTEROCARYA Kunth. 



Sect. EuPTEROCARYA Rchdcr and Wilson, n. sect. 

 Gemmae nudae, plerumque plures superpositae; amenta mascula 

 e gemmis nudis axillaribus infra apicem ramuli anni praeteriti orientia. 



Pterocarya stenoptera C. De Candolle in Ann. Sci. Nat. s^r. 4, 

 XVIII. 34 (1862); Prodr. XVI. pt. 2, 140 (1864). — Hance in Jour. 

 Bot. XI. 376 (1873). — Maximowicz in Bull. Acad. Sd. St. Peters- 

 bourg, s^r. 3, XVIII. 64 (1873); (in Mel. Biol. VIII. 639 (1873).— 

 Lavall^e, Icon. Arh. Segrez. 65, t. 19 (1885). — Skan in Jour. Linn. 

 Soc. XXVI. 494 (1899). — Pritzel in Bot. Jahrb. XXIX. 274 (1900). 

 — Dunn & Tutcher in Kew Bull. Misc. Inform, add. ser. X. 250 {Ft. 

 Kwangtung & Hongk.) (1912). 



Pterocarya laevigata Hort. ex LavalI6e, Icon. Arb. Segrez. 65 (pro sjTion.) 



(1885). 

 Pterocarya chinensis Hort. ex Lavall^e, 1. c. (pro synon.) (1885). 

 Pterocarya japonica Hort. apud Dippel, Handb. Laubholzk. II. 329, fig. 151 



(1892). 

 Pterocarya stenoptera, a typica Franchet in Jour, de Bot. XII. 317 (1898). — 



Pampanini in Nuov. Giorn. Bot. Ital. n. ser. XVII. 249 (1910). 

 Pterocarya stenoptera, /3 kouitchensis Franchet in Jour, de Bot. XII. 318 



(1898). — L6veill6, Fl. Kouy-Tcheou, 203 (1914). 



'Kiangsi: Kiukiang, side of streams, alt. 300 m., August 2, 1907 

 (No. i66o; tree 10-25 m. tall, girth 1-5 m.). Western Hupeh: 

 Ichang, 30-1000 m., April, June and October 1910 (No. 3214); same 

 locality, April 1900 (Veitch Exped. No. 117); Changyang Hsien, alt. 

 1000 m., December 1907 (No. 788; tree 30 m. tall, girth 6 m.); with- 

 out locality, A. Henry (No. 1332); " On-kia-ki," April to May, C. 

 Silveslri (No. 316). Yunnan: Lunan, river-side, A. Henry (No. 

 10573). Chekiang: Ningpo, 1861, /2. 0/(^/ia?n. Fokien: Dunn's 

 Exped., April to June 1905 (Hongkong Herb. No. 3863). Kwang- 

 tung: Canton, cultivated, 1872 (Herb. H. F. Hance, No. 17623). 



This is one of the commonest trees on river-banks and on the stony and sandy 

 beds of summer torrents in Hupeh and Szech'uan, up to 1000 m. altitude. On the 

 Yangtsze River and its main tributaries it is the first tree to appear on newly 

 formed islands. It is a quick-growing tree, attaining the height of from 25-30 m. 

 and a girth of from 4-6 m. with massive spreading branches and thick, deeply 

 fissured gray bark. Young plants spring from the roots and frequently form 

 thickets on dry stony or sandy river-beds. The wood is soft, brittle and of no value 

 except for fuel. In Shanghai, Hankow and other cities it is commonly planted as 

 a street tree and by foreigners is called " Chinese Ash." Near Ichang, where this 

 tree is particularly abundant, it is colloquially known as the Liu-shu. 



