136 EUTACE^. 



presents the structure of Sect. 1). — A low tree ; leaves 6"-3" long, 2|"-1" broad, 

 usually with black dots beneath ; racemes about half the length of the leaves, with 

 appressed, very short down : inferior cymules longer-peduncled ; sepals ovate-rouudish, 

 scarcely ciliolate ; petals glabrous, ovate-roundish, 1£'" long; disc forming abroad, flat ring 

 round the ovary, exceeded by the short style ; filaments short, inserted near the margin of 

 the disc, between its slight lobes ; capsule 8'" diam. : tubercles bluntly conical, the larger 

 ones scarcely 1'" long : endocarp pale, cartilaginous, bipartite, with the divisions oblong, 

 without a notch at the base ; seeds 5'" long, ovate, pointed : testa browu, chartaceous, with 

 a round, shining, black spot at the hilum ; embryo straight : cotyledons fleshy, plano-convex, 

 with a short radicle. — Hab. Trinidad !, Sieb. (Hb. T>in. 34), Pd., Cr., in the mountains : a 

 form with the leaves more coriaceous, but apparently not otherwise distinct, was sent by 

 Pd. from the island of Gasparis (near the entrance of the Paria Bay). 



3. PELTOSTIGMA, Walp. 



(Pachystigma, HooTc., non LTochst.) 



Sepals 4 (-3), two smaller, exterior. Petals \, imbricative. Stamens indefinite, inserted 

 upon a low carpophorous disc. Ovary entire, 8-celled, 8-sulcate : stigma large, depressed, 

 8-lobed, subsessile. Capsule 8-coccous : cells 2 (-1) -seeded, dehiscent on the inner side, 

 and separated from the bivalved endosperm. Seed suspended from a fleshy, clavated funi- 

 culus: testa coriaceous. — A low tree; leaves ternate, alternate, dotted ; flowers large, in 

 loose, few-flowered, fastigiate cymes. 



5. P. pteleoides, Walp. Hook. Ic. t. 698. — Pachystigma, Hook. — A small, fragrant, 

 glabrous tree ; leaflets elliptical, pointed at both ends, 4*"-2" long, quite entire, or with a 

 few serratures above: the terminal often larger, and narrowly tapering at the base; 

 cymes 3-2-chotomous, axillary or lateral, nearly as long as the leaf, sometimes reduced to 

 a single flower ; sepals deciduous, roundish, interior 1 (-2) coloured, twice as long as the 

 exterior, and equalling the corolla ; petals obovate, 6'" long, white, puberulous externally ; 

 stamens about 30 ; ovary velutinous ; capsule globose, 10"'-12"' diam., divided to the base, 

 glabrous : endocarp pale, cartilaginous, without a notch : testa brown : embryo unknown. 

 — Hab. Jamaica !, Pd., in the Santa Cruz mountains, S. Elizabeth. 



Tribe II. ZANTH0XYLE2E. — Stamens hypogynous : ovary abortive in the male flower. 

 Seeds albuminous: testa crustaceous. — Flowers dioscious; leaves usually dotted with pel- 

 lucid points. 



4. TOBINIA, Dew. 



(Fagara, Sw., non Jacq. ; Zanthoxyli sect. Tobinia, PI. Carib.) 



Calyx 3-lobed, or 3-partite. Petals 3. Stamens as many. Ovary 3(-l)-celled, with 

 the carpels distinct above, cohering at the base : stigma common, capitate, subsessile. Fol~ 

 liculi 3-1, distinct to the base, sessile : endocarps separated, bivalved. — Woody plants, 

 often armed with long, spreading prickles ; leaves without pellucid dots, coriaceous, shining, 

 impari-pinnate, with the terminal leaflet sometimes abortive : petiole not winged ; cymes 

 many-flowered ; calyx minute, much exceeded by the small, oval, whitish, imbricative petals ; 

 anthers purple, cordate, exserted. 



This West Indian genus, hitherto reduced to Zanthoxylum, approaches Diosmea by the 

 endocarp early loosened, and completely bivalved : its habit is peculiar, and the glabrous 

 leaves are devoid of the pellucid dots which are so general among Zanthoxyleee. The species 

 are nearly allied, and neither the existence of prickles, which occur on the axis, the leaflets, 

 the petioles, aud chiefly on the younger parts, nor the number of leaflets or carpids, afford 

 specific characters. 



* Cymes axillary, contracted ; leaflets with black dots. 



6. T. ternata, Desv. " Leaflets 3, obovate, quite entire, dotted with black pointy 

 beneath, petiolulate ; cymes contracted, axillary ; calyx 3-partite ; carpids globose, 3''-l"." 

 — Zanthoxylum, Sw. — A low shrub, usually unarmed. — Hab. Dominica (Sw.) ; [Cuba], on 

 the seashore. _ 



