RUTACE.E. 139 



parated, bivalved. — Trees ; leaves opposite or whorled, impari-pinnate or unifoliolate, devoid 

 of pellucid dots ; flowers in corymbiform, axillary, and terminal panicles ; calyx coloured. 



19. B. comocladifolia, Kth. Branchlets and petioles rusty-tomentose : leaves pin- 

 nate : leaflets 5-11-jugal, lanceolate-oblong, serrulate, penninerved, glabrous above, tomen- 

 tose along the midrib beneath : serratures mucronulate ; corymbs subsessile, much exceeded 

 by the leaves ; calyx yellow, exceeded by the stamens. — Humb. PI. Equin. t. 59. — Zantho- 

 xylum Sumach, Mac/. ! (non Gr.). — A tree, about 20' high ; leaflets 3" long, 1" broad, 

 shortly petiolulate ; calyx tomentose, 5 -partite, 1'" long; stamens 10. — Hab. Jamaica!, 

 Mac/., common in the higher mountains ; [Mexico !, Venezuela!, New Granada!, Peru]. 



Tribe III. SIMAUTJBEJE. — Stamens usually proceeding from an hypogynous scale. 

 Pericarp fleshy, rarely capsular. Testa membranaceous. — Leaves without pellucid dots. 



8. QUASSIA, Z. 



Calyx 5 -partite. Petals contorted, erect. Stamens 10, exserted, proceeding from a basi- 

 lar scale. Ovaries 5, distinct, uniovulate : style common, simple. Carpels drupaceous. 

 Embryo exalbuminous : cotyledons semiovoid. — A low glabrous tree ; leaves impari-pinnate : 

 petiole winged ; flowers large, crimson, in terminal racemes. 



20. Q. amara, L.f. — Desc. IT. 1. t. 5. — Leaflets 5, elliptical-oblong, pointed, quite 

 entire, tapering towards the base, subsessile at the petiolar strictures ; calyx V", petals 16'" 

 long : drupes biangular-ovoid, 4"'-6'" long, black, with a pale spot at the base : endocarp 

 crustaceous. — Hab. Trinidad!: Cr., introduced into Jamaica!, St. Vincent!; [Panama!, 

 Venezuela !, Guiana ! to Maranhao !]. 



9. SIMABA, Aubl. 



Calyx 4-5-partite. Stamens 8-10, included, proceeding from a long, emarginate scale. 

 Ovaries 4-5, distinct, uniovulate, inserted upon a gynophore : style common. Carpids sub- 

 drupaceous. Embryo exalbuminous, straight. — Leaves pinnate, or ternate, coriaceous : leaf- 

 lets quite entire. 



21. S. orinocensis, Kth. Leaflets 7-3, distant, spathulate, emarginate or blunt, glau- 

 cous beneath, glabrous ; flowers racemose : racemes peduncled, powdery, usually in a 

 terminal panicle. — Kth. N. Gen. 6. tf. 614. — S. guianensis, Planch, partim. — A tree; leaf- 

 lets Z"—\\" long, subsessile, usually opposite ; flowers small, about 2'" long : calyx and 

 corolla deciduous ; filaments as long as the oblong hairy scale ; ovaries as long as the gyno- 

 phore : style short, simple. — Hab. St. Vincent !, Guild. ; [Guiana !, equatorial Brazil I]. 



10. SIMARUBA, Aubl. 



Flowers dioecious. Calyx 5-fid. Stamens 10, included, proceeding from a roundish 

 scale. Ovaries 5, uniovulate : style 5-fid. Carpids drupaceous. Embryo exalbuminous : 

 cotyledons semiovoid. — Trees ; leaves abruptly pinnate : leaflets mullijugal, alternate, 

 petiolulate, deciduous, quite entire, coriaceous ; flowers in few-flowered cymules -. cymules 

 distant, in a spreading terminal panicle. 



22. S. amara, Aubl. Leaflets oblong or lanceolate-oblong, mucronale with a bluntish 

 point, green on both sides ; panicle exceeded by the leaves ; petals spreading. — Aubl. t. 332. 

 — S. officinalis, DC. — A high tree ; leaflets quite glabrous, or pubescent beneath. — Hab. 

 Dominica!, Imr., St. Vincent !, Anders.; [Guiana]. 



23. S. glauca, Kth. Leaflets spathulate-oblong, or lanceolate, rounded at the top, 

 pale-glaucous beneath, glabrous; panicle nearly as long as the leaves ; petals spreading. — 

 Desc. Fl. 1. t. 14. — S. officinalis, Macf. S. medicinalis, Endl. — A tree, about 20* high ; 

 calyx scarcely V" long ; petals 3"' long, yellow, oblong, blunt, contorted ; drupes biangular- 

 ovoid, dark-purple, dry, woody, 8"' long.— Hab. Jamaica !, M'Nab, Macf., AL, March, 

 common in the mountain-woods ; [Cuba!, Florida !]. 



11. SPATHELIA, L. 

 Flowers polygamous. Calyx 5-leavcd, coloured. Stamens 5, alternating with the petals, 



