190 THALAM1FLORJE. 



Shrubs or trees, frequently prickly. Leaves in general 

 alternate and punctato-glandulose. Name, from gaj^og yellow, 

 and gyXov wood. The timber of several trees belonging to this 

 genus is very valuable. It is very durable, which may be as- 

 cribed to the oil with which it is impregnated. 



1. Zanthoxylum pterota. Saven-tree, or bastard 

 Iron-wood. 



Aculeate leaves impari-pinnate, leaflets obovate 

 crenated subemarginate, petiole slightly margined, 

 prickles 2 stipulary uncinate, flowers tetrandrous. 



Lauro affinis, jasmini alato folio, costa media membranulis 

 utrinque exstantibus alata, ligno duritieferro vix cedens, Sloane, 

 II. 25. t. 162. f. 1 Pterota subspinosa, Browne, 146. t. 5. f. 

 1. Fagara pterota, Willd. Spec. I. 666. Zanthoxylum pterota, 

 De Cand. Prod. I. 725. 



HAB. Thickets. Port- Royal mountains, &c. 



FL. May July. 



A shrubby tree, about 12 feet in height : branches prickly 

 or unarmed. Leaves alternate, impari-pinnate : leaflets 4-5 

 paired, obovato-oblong, crenated, subemarginate, glabrous, pel- 

 lucido-punctate, subsessile : petiole about 5 inches long, mar- 

 gined. Prickles, when present, stipulary, hooked. Panicle 

 terminal and axillary, branched : peduncle of nearly the same 

 length as the petiole, angulose. Flowers 4-6 together, sub- 

 sessile, of a greenish yellow colour, odorous. A broad-ovate 

 concave bractea at each division of the panicle. Calyx small, 

 4-partite. Petals 4, oblong, obtuse, concave. Stamens 4, 

 longer than the petals: anthers yellow, with the pollen very 

 abundant. Ovary single, ovate : style 1, conical : stigma sim- 

 ple. Mature fruit size of a black pepper, 1 -celled, 2-valved, 

 1-seeded : seed glabrous, shining, of a brown colour. 



The figure of the leaf given by Browne (tab. 5. f. 1.) is in- 

 correct, and appears to be that of WEINMANNIA GLA.BRA. The 

 ovaries, according to De Candolle, are two. I could only de- 

 tect a slight groove along one side of the style. 



2 * Zanthoxylum emarginatum. Emarginate- 

 leaved yellow-wood. 



Unarmed, leaves abruptly or impari-pinnate 2-3- 

 jugate, leaflets ovate emarginate glabrous, racemes 

 terminal, flowers triandrous. 



Lauro affinis terebinthi folio alato, ligno odorato candido, 

 Sloane, II. 24. t. 168. f. 4. Zanthoxylum emarginatum, Swartz, 

 FL Ind. Occ. 572. 



