184 ARBORETUM ET FRUTICETUM BRITANNICUM. 



green shrub or low tree, of very vigorous growth ; so much so, in a young 

 state, that, from the shoots not being matured, they are frequently killed down 

 to the ground, and the foliage more or less injured. Notwithstanding this, the 

 aristotelia frequently flowers, and even ripens fruit; and, in all probability, 

 if the tree were planted in dry and rather poor soil, so as to grow slowly, and 

 not make more wood every year than it could ripen properly, it would attain 

 a large size, and form a very handsome hardy ever- 

 green shrub or tree. The plant grows vigorously in 

 any common garden soil, producing shoots 3 ft., 4 ft., 

 or 5 ft. in length when young ; and it is readily pro- 

 pagated by cuttings or by layers. 



Other Species of Aristotelra. One has been raised 

 in the Chelsea Botanic Garden, from South American 

 seeds, which Mr. Dillwyn found to stand the winter 

 of 1837-8 better than A. Mdcqui. 



* Azara. dentata R. & P., Don's Mill. i. p. 257. 

 (Bot. Reg. t. 1788., and our Jig. 277.) is an evergreen 

 shrub or low tree, growing to the height of 12ft. in 

 Chili. It. stood 8 years in the Hort. Soc. Garden, 

 against a wall, and, though killed by the winter of 8 , 7 . Alira denUlU . 



1837-8, it may yet ultimately prove tolerably hardy. 

 A. integrifolia,' if a different species, may possibly be found hardy also. 



ORDER XXIV. ANACARDIA X CE^. 



Identification. Lindley, in Introd. to N. S. 



Synonymes. rerebinth&ceae, tribe 1. Anacardifiae R. Br., and tribe 2. Sumachtnece Dec. Prod. 

 2. 66. 



. CHAR. Flowers generally unisexual. Calyx usually 5-parted. Petals 



equal in number to the divisions of the calyx, cohering at the base when the 



disk is absent. Stamens same number, or twice that number. Disk, when 



present, annual. Ovarium usually solitary. Styles 1 3, sometimes wanting. 



Fruit indehiscent. (Lindl.) Low deciduous or evergreen trees, natives of 



Asia and Africa. 



Leaves simple or compound, alternate, exstipulate, deciduous or evergreen ; 



without pellucid dots. Flowers terminal or axillary, in panicles, with bracts. 



The hardy species belong to the genera Pistacia, Rhus, and Duvaua, 



which are thus contradistinguished : 

 PISTA V CIA L. Flowers dioecious, apetalous, amentaceous. Stigmas 3. Drupe 



dry, containing a 1-celled, 1-seeded nut. 

 TZiiu's L. Flowers polygamous. Styles or stigmas 3. Drupe nearly dry, 



containing a l-celled, 1 3-seeded nut. 

 DUVAUA Kth. Flowers monoecious or dioecious. Styles 3 <t, short. Drupe 



containing a coriaceous 1-seeded nut. 



GENUS I. 



PISTA r CIA L. THE PISTACHIA TREE. Lin. Syst. Dice'cia Pentandria. 



Identification. Lin. Gen., 1108. ; Dec. Prod., 2. p. 64. ; Don's Mill., 2. p. 61. and 65. 

 Synonyme. Terebinthus Juss. 



Derivation. From the Greek word Pistakia, derived from Psiltakion, the name of a city ; or from 

 the Arabic word Foustaq, the Arabian name of /Mstacia vera. 



Gen. Char. Flowers dioecious, and without petals ; disposed in amentaceous 



