Z Y G 



died without flowering. The Jlems are a foot long, fmooth, 

 roundifh, except a flatnefs on the upper fide. Leaves 

 oppofite, without veins. Stipules reflexed ; two between 

 each pair of leaves, at the uppermoll fide of the ftem ; one 

 between the fame pair, on the lower fide ; one between the 

 leaflets of each leaf. Linnaus. This laft feems to anfwer 

 to the little point, or rudiment of a leaflet, which occurs in 

 feveral others of the broad-leaved fpecies. 



15. Z. ? lanatum. Woolly-jointed Bean-Caper. Willd. 

 n. 13. — " Leaves ternate ; leaflets papillary beneath. Styles 

 five. Stem zigzag, woolly at the joints." — Native of Sierra 

 Leone. A , plant of a doubtful genus, feen by the above 

 author in a dried ftate only. The Jlem appears herbaceous, 

 round and fmooth, except the joints, which are remark- 

 ably woolly. Leaves o-pY>oiiX.t,{mz[\, on footjialks. Leaflets 

 three, on very fhort partial footjlalks, roundifh, tapering at 

 the bafe, pointed at the end ; fmooth on the upper fide ; 

 befet underneath with prominent points. Flo'wer-Jlalhs 

 axillary, folitary, fingle-flowered, erect ; drooping after 

 flowering. Calyx of five linear, obtuie leases ; downy on 

 the iniide, and at the edges. Corolla not prefent ; per- 

 haps fallen. i^/Yam^n/i but little dilated at the bafe. Germen 

 club-fhaped. Styles five, long, and thread-fhaped. Stigmas 

 obtufe. Capfule ovate, with five angles, five cells, and five 

 valves with keel-like edges, burfling at the bafe. Seeds foU- 

 tary. IVilideno'w. The ternate leaves afford a ftrong pre- 

 fumption againfl this being a Zygophyllum, and the want, as 

 iL feems, oi neSaries, with the fivejlyhs, decide the queftion, 

 in our judgment. Not having feen the plant, we leave it 

 here for further inquiry. 



16. 'L. arhoreum. Tree Bean-Caper. Jacq. Amer. 130. 

 t. 83. Linn. Sp. PI. 1673. Willd. n. 14 Leaves ab- 

 ruptly pinnate. Stem arboreous. — Native of South Ame- 

 rica. Found by Jacquin, in uncultivated valleys about 

 Carthagena, as well as in woods on the fandy fea-fhore, 

 flowering in July. A very handfome tree, forty feet high ; 

 the trunk being about fix feet ; the head denfe, widely 

 fpreading, and extremely ornamental ; the branches oppofite, 

 or forked. Leaves very numerous, oppofite, four inches 

 long, of about feven pair, without a terminal one, of alter- 

 nate, feffile, elliptic-oblong, obtufe, entire, fmooth, (hining 

 hajlets, an inch or more in length. Clujlers axillary and 

 terminal, fhorter than the leaves, compound, lax, generally 

 forked. Flowers large and handfome, without fcent. 

 Calyx yellowifh-green, fmooth. Petals orange-coloured, 

 roundifh, emarginate ; their claws as long as the calyx. 

 NeSary fringed ; its fcales gradually larger towards the 

 upper fide of the flower. Stamens erecl, converging. 

 Germen tapering at the bafe, into a long, thick, five-fur- 

 rowed ftalk. Capfule with five large membranous lobes. 

 When it bloffoms this tree affords a moft magnificent 

 fpeftacle, from the innumerable flowers, covering the bright 

 green leafy head. Before the inflorefcence appears, the 

 leaves might incautioufly be fuppofed doubly pinnate. 

 The inhabitants give the name of Guay-acan to this tree, 

 which is a general appellation for all kinds of hard wood 

 that is ufeful for cabinet or other work. The trunk is re- 

 ported to become changed into ftone by lying in the earth, 

 being incapable of corruption. Jacquin. 



Zygophyllum, in Gardcniag, comprifes plants of the 

 herbaceous and woody fucculem. exotic kind, among 

 which the fpecies are, the common bean-caper (Z. Fabago), 

 the African bean-caper (Z. feffilifolium ) , the purflain- 

 leaved Ethiopiam bean-caper (Z. Morgfana), the thorny 

 bean-caper (Z. fpinofum;, and the white Eg;j'ptian bean- 

 caper (Z. album). 



Z Y M 



The firft has a deep flefliy root, and foft herbaeeou; 

 Italics, which decay in the winter. 



The fecond is of a fhrubby growth, and there are varieties, 

 with yellow flowers, with fulphur-colouped flowers, with 

 white flowers, with copper- coloured flowers, having moftly 

 a reddifli or brown fpot near the bafe of each petal. 



The third has alfo a flirubby ftem, and there is a variety 

 with flame-yellow-coloured flowers. 



And the fourth has an under fhrubby growth. 

 Method of Culture.— The firft fort is raifed from feeds, 

 which ftiould be fown in the fpring in pots filled with liTht 

 fandy mould, or on a hot-bed. When the plants have 

 a few inches growth, they fliould be removed into feparate 

 pots, plunging them into a hot-bed, admitting air fo as 

 gradually to harden them to the open ground. They ftiould 

 be protefted for a winter or two, and then be turned out into 

 borders, or'other parts, where the fituation is warm, and 

 the foil dry and rubbiftiy, as they are of a fucculent 

 nature- 



The other forts are capable of being increafed by cuttings 

 and feeds ; the cuttings fhould be planted out in the fpring 

 or fummer in pots filled with light fandy mould, and plunged 

 in a hot-bed, being occafionally watered, when they quickly 

 emit roots, and ftioot at top ; and when fown in the fummer 

 months, they may be planted in a fhady place, or in pots 

 placed in the fhade, giving frequent waterings, when they 

 will alfo take good root. In either method, they ftiould be 

 potted off feparately towards autumn, in order to be moved 

 into the green-houfe or glafs-cafe in the beginning of 

 autumn. 



The feed fhould be fown in the fpring in pots of light 

 earth, and be plunged in a hot-bed, where they foon come 

 up : when a little advanced in growth, they fhould be 

 pricked out in feparate fmall pots, being watered and 

 re-plunged into the hot-bed till well -rooted, when they 

 fhould be gradually hardened to the full air, and in June 

 fet out to remain till the autumn, when they fhould be 

 placed in the green-houfe, or fome other place, where 

 they may have protection for the winter. 



The firft fort affords variety in the borders, as well as 

 among other potted plants ; and the others in colleftions of 

 the green-houfe kind. 



ZYGOPOLIS, in Ancient Geography, a town.of Afia, 

 in the Colchide, near the town of Trapezunte. 



ZYGOSTATES, among the Ancients, an officer who 

 was the overfeer of weights, and was to take care that 

 tradefmcn ufed none but what were juft. 



ZYGRIS, in Ancient Geography, a town on the coaft of 

 the nome of Lybia ; and Zygrite are the people who in- 

 habit this nome. 



Z YMAR, a name given by fome of the chemical writers 

 to verdigrife. 



ZYME, a word ufed by many authors to exprefs fer- 

 ment or leaven. 



ZYMOLOGY, in Chem'flry, a term ufed by fome 

 writers to exprefs a treatife on fermentation, or the doc- 

 trine of fermentation in general. 



Mr.'Sympfon has wntten a treatife on this fubjeft, ia 

 which he refers the whole to the internal conflifts of acid 

 and fulphur in bodies, and feems to think that the pheno- 

 mena of hot-baths, the generation of minerals, and the pro- 

 duftion of mineral waters, the grand appearances of lirfit, 

 heat, and fire, and the generahty of the fubterranean phe- 

 nomena of damps, earthquakes, and fiery eruptions, and the 

 appearance of meteors, may be all explained by the doc- 

 F f 2 tnne 



