ANACARDIACEAE. RHUS 179 



po, 1908, D. Macgregor. Korea: Fusan, temple grounds, September 

 6, 1903, C. S. Sargent; Seoul, in gardens, September 1906, U. Faurie 

 (Nos. 486, 487); Quelpaert, September 1908, 1909, Taquet (Nos. 

 666, 2759). 



This Sumach is abundant up to 1200 metres altitude everwhere in Hupeh 

 and Szcch'uan either in the form of a bush from 1-5 m. tall or as a small fiat- 

 topped tree from 6-8 m. high. The specimens from Mt. Omei and Yunnan have 

 the leaf-rhachis very narrowly winged and very closely approach the Indian 

 variety. Rhus javanica is the " Fu-yang shu " or Chinese Nut-gall tree. The 

 galls which develop on the leaves are a valued article of commerce and collo- 

 quially are known as " Wu-pei-tzu." 



A picture of these galls will be found under No. 0349 of the collection of Wilson's 

 photographs. 



Here may be added a note on the Himalayan form of this species which has 

 been found in Formosa, though not in China proper. 



Rhus javanica, var. Roxburghii, Rehder & Wilson, n. comb. 



Rhus Buchi-amelam Roxburgh, Hort. Cat. Beng. 22 (nomen nudum) (1814). 



Rhus amela D. Don, Prodr. Fl. Nepal. 248 (1825). 



Rhus semialata, y. Roxburgii De Candolle, Prodr. II. 67 (1825). 



Rhus affinis WaUich, Cat. No. 995 (1828). 



Rhus Roxburghii Decaisne ex Steudel, Nomencl. Bot. ed. 2, II. 452 (quasi 



synon.) (1841). 

 Rhus semialata Brandis, Forest Fl. Brit. Ind. 119 (1874); Ind. Trees, 197 



(1906). — Hooker f., Fl. Brit. Ind. II. 10 (1876). 

 Rhus semialata, f. exalata Franchet in Bull. Soc. Bot. France, XXXIII. 466 



(nomen nudum) (1886); PI. Delavay. 148 (1889). 



Formosa: Tamsui, 1864, R. Oldham (No. 87); Takow, common, A. Henry 

 (No. 348, in part); Bankinsing, A. Henry (No. 348, in part). 



This plant also yields gall-nuts but they are more hairy than those of the species. 

 This variety differs from the t3rpe in having the upper part of the rhachis of the 

 leaf only very slightly or not at all winged. Most of the Indian specimens we 

 have seen are best referred to this variety though a few are like those from Yunnan 

 and Mt. Omei and quite intermediate in character. The size of the wing on the 

 rhachis of the leaf seems dependent on climate and latitude; the wings being more 

 strongly developed on trees growing farthest north. 



Sect. II. TOXICODENDRON DC. 

 Rhus orientalis Schneider, III. Handb. Lauhholzk. II. 151 (1907). 



Rhus Toxicodendron, var. hispida Engler in Bot. Jahrb. XXIX. 433 (1900). 

 Toxicodendron orientate Greene, Leafi. Bot. Observ. I. 127 (1905). 

 Rhus intermedia Hayata in Jour. Coll. Sd. Tokyo, XXV. art. XIX. 73 {Fl. 

 Mont. Formosae) (1908). 



Western Hupeh : Fang Hsien, rocky places and tree trunks, alt. 

 1300-2300 m., conmion, June and September 1907 (No. 284; climber 

 6 m. and more or when growing on rocks a bush 1-2 m. tall) ; without 



