ANACARDIACEAE. — RHUS 179 



po, 1908, D. Macgregor. 



IUI1< 



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

 666, 2759). 



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

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

 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. Rhiis 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 WHson 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. 



u- 



iim 



itnus £sucm-ameiam itoxDurgn, tiori, oat. £>e/ty. ^^ ^u.yji^^^ ±±^ 



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



synon.) (1841). rrr -lr^T 



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



(1906). — Hooker f., Ft Brit Ind, II. 10 (1876). ^^^^tt .«a 



Rhus semialata, f. exalata Franchet in Bull Soc. Bot France, XXXlli. 4bb 

 (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 type 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 wmg on the 

 rhachis of the leaf seems dependent on climate and latitude; the wmgs bemg more 

 strongly developed on trees growing farthest north. 



Sect. II. TOXICODENDRON DC. 

 Rhus orientaUs Schneider, III Handb. Laubholzk, II. 151 (1907). 



Rhus Toxicodendron, var. hispida Engler in Bot Jahrh. ^^'/^^^ (1900). 

 Toxicodendron oHentale Greene, Leafl. Bot Ohserv, I. ^^7 (1905). 

 Rhus intermedia Hayata in Jmr. Coll Set Tokyo, XXV. art. XiA. ^6 ^rt. 

 Mont Formosae) (1908). 



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

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

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



