Naturalisation in Extra-Tropical Countries. 417 



Rims g-labra, Linne. 



North- America, extending to 54 north latitude ; in Norway 

 hardy to lat 58 8'. This sumach-shrub will grow on rocky and 

 sterile soil. It produces a kind of gall, and can also be used as a 

 substitute for the ordinary sumach. Employed also for therapeutic 

 purposes. This species can be easily multiplied from suckers. It 

 is rich in the quality and long-lasting yield of honey from its 

 flowers [Quinby]. American sumachs contain generally from 15 

 to 20 per cent, or occasionally up to 26 per cent, tannin. On value 

 of American Sumachs see Special Report No. 26, U.S. Department 

 of Agriculture, 1880. 



Rhus lucida, Linne. 



South- Africa. This shrub proved in Victoria of peculiar adapt- 

 ability for forming hedges ; it is evergreen, close-growing, and 

 stands clipping well. About half a hundred South-African species 

 are known, of which probably some could be utilised like ordinary 

 sumach ; but hitherto we have remained unacquainted with the 

 nature and degree of any of their tanning and coloring principles. 



Rims rhodanthema, F. v. Mueller. 



East-Australia, on river-banks. A tree finally to 70 feet high ; 

 stem often 2 feet in diameter. Wood dark-yellow, soft, fine-grained, 

 beautifully marked, much esteemed for cabinet-work. Worth 5 

 to 6 per 1,000 feet in Brisbane [W. HillJ. 



Rhns semialata, Murray. 



China and Japan, extending to the Himalayas. Attains a height 

 of 40 feet. This species produces a kind of nutgalls, the tan- 

 principle of which ranges from 69 to 77 per cent. It is apt to 

 spread beyond ready control in rich soil. The stem will finally 

 reach the thickness of a foot or more ; the wood is tough and 

 durable but stringy, prettily marked with dark edging. 



Rhus succedanea, Linne. 



The Wax-tree of Japan, extending to China and the Himalayas, 

 there up to 8,000 feet. Valuable for scenic effect through its 

 autumnal tint. The produce of this tree has found its way into the 

 English market. The crushed berries are steamed and pressed, fur- 

 nishing about 15 per cent, of wax, which consists mainly of palmatin 

 and palmitic acid. Rhus silvestris (Siebold & Zuccarini) and R. 

 vernicifera yield there a similar wax. 



Rhus typhina, Linne. 



The Staghorn- Sumach. Eastern North- America, extending to 

 Canada. Hardy in Norway to lat. 61 17'. This species will 

 become a tree of about 30 feet height. Its wood is of orange tinge. 

 Through incisions into the bark a kind of copal is obtained. The 



2B 



