RUTACEJE. 185 



cocci, with the endocarp usually separated and 2-valved, or fleshy.— Leaves (in the West 

 Indian genera compound, or unifoliolate^) usually exstipulate. 



Essential oils are general in the first and second tribe, and in some cases the aromatic 

 principle is combined with a bitter substance (Esenbeckia) . In the tribe of Simarubea, a 

 bitter principle is the universal character, and the bark of several species (Quassia, Si- 

 maruba) is known as the drug Quassia, containing Quassiin. Some Rutacece produce a 

 valuable timber : Esenbeckia affords excellent walking-sticks (Gasparilla Colorado). 



Teibe T. PILOCARPI! JE. — Stamens hypogynous, or inserted into an hypogynous disc. 

 Endocarp bivalved. Albumen none. — Leaves usually dotted with pellucid points. 



1. PILOCARPUS, r. 



Calyx 5-lobed. Petals valvate above. Stamens 5, inserted below a large disc. Ovary 

 5-lobed, enclosed within the disc : styles short, distinct at the immersed base, combined 

 above. Folliculi distinct, monosperm. Testa membranaceous. — Shrubs; leaves dotted, 

 ]-{-$)-foliolate ; flowers in terminal racemes. 



1. P. racemosus, V. Glabrous ; leaves elliptical, rounded at the top ; raceme lax. 

 — Plum. Ed. Burm. t. 127 ; Vahl, Eclog. t. 10 : anal. — A shrub, specimens of which I 

 have only seeu in the British Museum : habit of Lunania. — Hab. Montserrat !, in the 

 mountains, V. 



2. ESENBECKIA, Kth. 



Sepals 5, distinct. Petals imbricative. Stamens 5, inserted below or upon a eupuliform 

 or dilated disc. Ovary slightly 5-lobed : style simple, with a capitate stigma. Capsule 

 muricate, loculicidal, and at length septicidal : pericarp separated from the cartilaginous, 

 bipartite, 1 -seeded endocarp. Testa chartaeeous. — Trees or shrubs ; leaves dotted, usually 

 alternate, digitate or unifoliolate : leaflets quite entire ; flowers in terminal or axillary 

 racemes: special peduncles bearing S-1-flotoered cymules ; petals dotted. 



Sect. 1. Euesenbeckia. — Stamens inserted below the eupuliform, hypogynous disc. 



2. E. pentaphylla, Gr. Leaves digitate : leaflets 5-3, elliptical-oblong, blunt, pe- 

 tiolulate ; racemes compound, pubescent : cymules 3-2-flowered ; " capsule turbinate, mu- 

 ricate." — Galipea, Macf. I — A middle-sized tree ; leaflets 5"-3" long, the terminal ones often 

 larger : veins rather prominent ; racemes as long as the leaves ; sepals roundish, ciliate ; 

 petals yellowish, obovate, spreading, l|'"long; ovary encircled by the disc, papillose. — 

 Hab. Jamaica !, Macf., Pd., AL, March, in the distr. of Port-Royal. 



3. E. attenuata, Gr. (n. sp.). Leaves unifoliolate, oblong-lanceolate, blunt, gradually 

 tapering towards the base ; racemes simple, puberulous : special peduncles bibracteolat^ (-3)- 

 flowered ; capsule globose, echinate : endocarp with a notch. — A tree ; leaves 6"- **Iong, 

 1$"-1" broad ; racemes 2-3 times shorter than the leaves, with appressed, deciduous hairs : 

 special peduncles 2"-3"' long, bearing the bracteoles at the middle ; sepals roundish, ci- 

 liate ; petals ovate, with a bluntish point, 2'" long, pubescent externally ; disc obsoletely 

 lobed, as high as the papillose ovary; capsule 10'" diam. : spine3 subulate, compressed, 

 1£'"-1'" long : endocarp pale, cartilaginous, constricted below by a semilunar notch, which 

 is formed by its funicular part remaining membranaceous, and becoming brown and sepa- 

 rated by rupture (A. Jussieu's endocarpial membrane) ; seeds 5'" long, ovate : testa brown, 

 thin, rigid. — Hab. Trinidad I, Pd., Cr., in mountain-woods. 



Sect. 2. Polembbytjm (Esenbeckia, Mart.). — Stamens inserted upon the inside of the 

 spreading, hypogynous disc. 



4. E. castanocarpa, Gr. Leaves unifoliolate, elliptical-oblong, with a bluntish point, 

 shortly tapering at the base ; racemes filiform, glabrescent, cernuous, simple or divided at 

 the base: cymules 3-1 -flowered, inferior distant ; capsule globose, tubercled: endocarp with- 

 out a notch.— Juts, in Mem. Mus. 12. t. 28./. 49 -.fruit. — Polembryum, A. Just. Es. pi- 

 locarpoides, Schtt. sec. Mb. Book, (non Kth. : Kunth'i figure, though agreeing in habit, 



