192 ARBORETUM ET FRUTICETUM BRITANNICUM. 



or less hispid, slightly compressed, agreeably acid. This species varies greatly 

 in the degree of pubescence of the leaves. R. suaveolens Ait. o: ly differs in 

 having the leaves almost glabrous. H. S. 



Other Species of Rhus. Several names are in the London catalogues, which 

 are synonymes of kinds which have been lost, or are not distinctly known by 

 us. R. piimila Michx, R. diversiloba Tor. <Sf Gray (R. lobata Hook.), R. 

 trilobata Niitt., R. /aarina N'utt., are described in Torrey and Gray's Floras, 

 but they have not yet been introduced ; or, if they have, they exist only as 

 small plants. Some plants of Rhiis have been raised in the Hort. Soc. Gar- 

 den, from seeds sent Irom the snowy mountains of Nepal, which will doubtless 

 prove hardy. 



Genus III. 



DUVAU'^ Kth. The Duvaua. Lin. St/st. Polygamia Monce'cia. 



Identification. Kth. Gen. Tereb., p. 8. ; Dec. Prod., 2. p. 74. ; Don's Mill., 2. p. 76. 



Synonymes. ijchlnus sp. Andr. ; ylmyris sp. Cav. 



Derivatian. Called Duvaua, after M. Diivau, a French botanist, known as the editor of the 



original edition of Richard's Analyse du Fruit ; and for some observations on ferdnica." {Lindlej/, 



in Sot. Meg., t. 1568.) 



Gen. Char. Calyx persistent, with 4 5 segments. Corolla of 4 5 concave 

 petals. Sexes monoeciously polygamous. Stamens 8 10, inserted under a 

 pitcher-shaped calycine disk, which has as many sinuses and as many teeth 

 as there are stamens : these are opposite the sinuses, half of them opposite 

 the petals, and half alternate with them. Anthers in the fruit-bearing flowers 

 barren. Ovary conical. Styles 3 4. Sti<jmas capitate. Fruit a globose 

 drupe, with a leathery nut. Chilian trees and shrubs, becoming spiny as 

 they advance in growth. {Dec. Prod.) 



Leaves simple, alternate, exstipulate, evergreen ; gerierally oblong or 

 ovate, toothed, small. Floiuers in axillary racemes, greenish yellow. There 

 are four species in cultivation, which are all very handsome evergreen bushes, 

 with bright shining foliage. 



The foliage emits, when bruised, a strong but not unpleasant odour, of 

 the nature of turpentine. The leaves of D. ovata, and, doubtless, those of 

 every species of Duvaua, when thrown upon water, move about in a manner 

 which may be com|.>ared to a fleet of shii>s employed in manoeuvring, or to I 

 persons engaged in dancing. Seeds have been produced plentifully in the : 

 Hort. Soc. Garden by D. dependens, trained to a south wall ; and seeds of 

 D. latifolia are often imported from Chili. Cuttings of the ripe wood root i 

 in sand, under a bell-glass, in a gentle heat. D. dependens was but little > 

 injured at Kew, in the Chelsea Botanic Garden, and in the Hort. Soc. Garden, 

 by the winter of 1837-8 ; and D. ovata was not injured at all, and maybe 

 considered as an evergreen shrub, as hardy in the climate of London as Aris- 

 totelia Mdcqui. 



5 1. D. depe'ndens Z)ec. The drooping-SraMc/ief/ Duvaua. 



Identification. Dec. Prod., 2. p. 74. ; Don's Mill. , % p. 76. 



Synonymes. Jniyris poly^auia Cav. Icon. 3. p. 20. t. 239. ; Schlnus dependens Ort. Decad. 8. p. 102.; 



Duvaua dependens a Hook. Bot. Misc. 2. p. 176. 

 Engravings. Cav. Ic, t. 239. ; Bot. Keg., t. 1.573. ; and our fig. 291. 



Spec. Char., Sfc. Leaves mostly, especially u[)on the flower-bearing branches, 

 obovate, and very obtuse, jr even emarginate, with scarcely any denticu- 

 lations. Racemes scarcely exceetling the leaves in length. Stamens mostly 

 10. Flowers smaller than those of D. ovata. (Lindl.) An evergreen cree; 

 in British gardens a wall shrub. Chili. Height in England 10 ft. to 12 ft. 



