168 



ARBORETUM ET FRUTJCETUM BRJTANNICUM. 



is oval-oblong, resembling that of the olive ; at 

 first green, afterwards yellow, and entirely red 

 when ripe. The juice of the fruit is used for 

 making the jujube lozenges. The plant is 

 tolerably hardy ; having stood the winter of 

 1837-8 in the Hort. Soc. Garden. It is easily 

 increased by cuttings of the roots, whether of 

 young or old trees ; or by suckers, which it 

 throws up in the greatest abundance. Seeds 

 of it may also be procured from Italy. 



Other Species ofZizyphus. Z. smensis Lam. 

 has been cultivated in the Hort. Soc. Garden 

 but it is only half-hardy ; and the same may 

 be said of Z. spina Christi, Z. fle.ruosa, and 

 Z. incurva, which are marked in some cata- 

 logues as hardy. 



GENUS II. 



ITl 



2-10. Z zyj.hus 



PALIIPRUS L. THE PALIURUS, or CHRIST'S THORN. Lin. Syst. Pentandria 



Trigynia. 



Identification. Tourn. Inst., t. 386. ; D. Don Prod Fl. Nep., p. 189. ; Dec. Prod., 1. p. 22. ; Don's 



Mill., 2. p. 23. ; Brongn. Mem. Rharn., p. 46. 



Synonymes. Paliiire, Porte-chapeau, Fr.\ Judendorn, Ger.\ Paliuro, Hal. 

 Derivation. From pallo, to move, and ouron, urine ; in allusion to its diuretic qualities ; or from 



Paliurus, the name of a town in Africa, now called Nabil. 



Gen. Char. Calyx spreading, 5-cleft. Petals 5, obovate, convolute. Stamens 

 5, protruding. Anthers ovate, 2-celled. Disk flat, pentagonal. Ovary 3-celled. 

 Styles 3. Fruit dry, indehiscent, expanding into a membrane round the disk, 

 containing a 3-celled nut. (Don's Mill.} 



Leaves simple, alternate, stipulate, deciduous ; nerved with spines in the 

 axils. Flowers axillary, greenish yellow. 



Two species are hardy, and very ornamental from their shining leaves, and 

 abundance of rich greenish yellow flowers, which are succeeded by fruit of 

 rather a singular form. Propagated by seeds, which they produce in England, 

 in abundance. 



& 1. P. ACULEA^TUS Lam. The prickly Paliurus, or Christ's Thorn. 



Identification. Lam. 111., t. 210. ; Fl. Fr., ed. 3., No. 4081. : N. Du Ham.. 3. t. 17. ; Don's Mill., 2. 



p. 23. 



Synonymes. P. petasus Dum. Cours. 6. p. 266. ; P. australis Gcert. Fruct. 1. 1. 43. f. 5. ; P. vulgSris 

 D. Don Prod. Fl. Nep.]89.; .Rhamnus .Paliurus Lin. Spec. 281.; Z/zyphus .Paliurus WOtd. 

 Spec. 1. p. 1183., Sims Bot. Mag. t. 1893. ; Christ's Thorn, or Ram of Libya, Gerard ; E'pine de 

 Christ, Argalon, Porte-chapeau, Fr. \ gefliigelter Judendorn, Ger. ; Giuggolo salvatico, Ital. ; Xlin, 

 shops of Constantinople, where the seeds are sold as a medicine, and as a yellow dye. 

 Lam. 111., t. 210. ; N. Du Ham., 3. t. 17. ; Bot. Mag., t. 1893. ; the plates of this 



in the herb-shops of Constantinople, where the seeds are sold as a medicine, and as a yellow dye. 

 Engravings. Lam. 111., t. 210. ; N. Du Ham., 3. t. 17. ; Bot. Mag., t. 1893. ; the plates " 

 species, both in a young and an old state, in Arb. Brit., 1st edit., vol. v. ; and our fig. 241. 



Spec. Char., $c. Branchlets pubescent. Leaves ovate, serrulated, quite 

 smooth, 3-nerved, with two spines at the base, one straight, the other re- 

 curved. Flowers in axillary crowded umbellules ; few in an umbellule. 

 Wing of capsule crenated. (Don's Mill.) A branching deciduous shrub, or 

 low tree. South of Europe, and North and West of Asia. Height 15 ft. to 

 30ft. Introduced in Io96. Flowers greenish yellow; June and July. 

 Fruit yellow ; ripe in September. 



The fruit is buckler-shaped, flat and thin, but coriaceous. From the sin- 

 gular appearance of this fruit, which has the footstalk attached to the middle, 

 which is raised like the crown of a hat ; and the flattened disk, which re- 



