92 BUETTNEIUACE^. 



the solitary pedicel ; calyx-segments oval, blnntish, equalling the column ; petal-limbs twice 

 exceeded by their claw ; column-lobes bipartite : special ones shortly subulate, exceeding the 

 anthers ; style equalling the column. — This species has not been observed since the time of 

 Swartz, and I have only seen his own specimen in the Stockholm collection, and that of 

 Shakspeare in the British Museum, which are both incomplete.— A branched shrub : habit of 

 a Rhamnus ; leaves l"-2" long, 9"'-12"' broad, glabrous and somewhat shining, arch-nerved, 

 with the delicate veins prominent on both sides ; petiole thin, l"'-2"' long, with the stipules 

 minute and deciduous ; calyx 1'" long, spreading, membranaceous. — Hab. Jamaica 1, Sw,, 

 rare among shrubs. 



Sect. 3. EuAYEWiA. — Limb of petals roimdiah-emarginate, terminated hy a stalked, oblong 

 gland (or a^endage), which is reflexed. Column-tube fMform and enlarged abruptly 

 into the infundibular limb : lobes erect, suiemarginate, antheriform. Ovary long-stalked. 

 Capsule verrucose. — A suffrutescent, procumbent herb : down minute, . stellate ; leaves 

 serrate ; flowers fascicled, axillary, purple. 



6. A. pusilla, L. Stems numerous from a perennial root ; leaves ovate or lanceolate, 

 pointed or acuminate, serrate, pubescent or glabrate : petiole short, exceeded by the filiform 

 pedicels; calyx-segments ovate-lanceolate, nearly equalling the column and the corolla; 

 petal-limbs much exceeded by their claws : diameter a little longer than their dorsal appen- 

 dage ; column-lobes oval-rounded, much larger than the anthers ; ovary much shorter thau 

 its filiform carpophore, which is included within the narrow part of the column ; style the 

 same length as the ovary, reaching to the top of the column ; capsule globose, puberulous 

 between the scattered warts.— 5^. t. 132./. 2; Cav. Diss. t. 147.— Stems 6"-12" long, dif- 

 fuse ; leaves variable in shape on the same branch, 4"'-10"' long, 3'" broad : petiole 2"'-3"' 

 long ; flower-fascicle sessile or shortly peduncled ; pedicels usuEdly 3-5, 3'" long ; calyx IJ'" 

 long; capsule 2'" diam. — Hab. Jamaica (SI.), Antigusi!, Nichols.; [California!, New Mexi- 

 co!, Texas, Key-west]. 



4. BUETTNERIA, L. 



(Pentaceros, G. W. F. Mey) 



Calyx 5-partite, coloured. Petals 5, affixed to the sterile lobes of the column by the 

 margin of the limb : limb subsessUe (or shortly clawed), erect, with a terminal, narrow ap- 

 pendage. Column 5-lobed : anthers bilocular, snbsessile in the sinuses between the lobes (or 

 sterile anthers). Ovary 5-locuIar : cells biovulate : superior ovule ascending, inferior pendu- 

 lous. Style simple : stigma of 5 globose lobes. Capsule pentacoccous, echinate : carpids 

 one-seeded, dehiscent along the inner angle. Embryo albuminous, straight: cotyledons 

 convolute, foliaceous, 2-lobed. — Shrubs (rarely herbs) ; inflorescence axillary or lateral. 

 Pentaceros aculeatus, Mey. !, is a congener, apparently the same with S. brevipes, Benth. 

 *1 J[-B. microphylla, L., indigenous in the larger Antilles [Haiti!, Cuba !], is distingnished by 

 P! its bipartite anthers, and petals shortly clawed, biaurioulate at the base of the limb. This 

 species (though shrabby and twining), exhibits the habit oi Ayenia pusilla, and its capsule 

 is rather more verrucose (with elongated, soft warts) than prickly with spines. It might 

 consequently be considered Ulcewise as a particular, intermediate genus. 



7. B. scabra, L. {non Pohl). Stem shmSbb-j, prickly : braaches virgate, angular above, 

 glabrous ;. ^SOTe* rigid, linear or lanceolate-linear, mucronate, quite entire, or with a few 

 teeth, and scabrous on the margin, shortly petioled: petiole marginate; flower-fascicles 

 small, peduncled, arranged in interrupted compound racemes; calyx-segments lanceolate, 

 much exceeding the column ; petals subsessile, obcordate : appendage clavate-linear, pube- 

 rulous, three times exceeding the limb, and equalling the calyx; column-lobes short, 

 rounded; capsule globose: prickles short. — Aubl. t. 96; Cav. Biss.t. 148./. 1: a form 

 with the inferior leaves hastate. Pohl, Bras. t. 149, 151, 154. — B. ramosissima, et scal- 

 pellata. Phi.: both accidentally without prickles. B. virgata. Phi. — ^A trailing shrub, 3'- 

 12' high ; prickles shortly subulate, spreading or recurved ; inferior leaves 4" long, 4'" broad, 

 superior ones reduced ; flowers whitish, with red petal-appendages : calyx l"'-3'' long ; cap- 

 sule 6'" diam.— Hab. S. Vincent!, Anders.; Trinidad!, Pd., Cr.; [Guiana I, Brazil!, Uru- 

 guay!]. 



8. B. catalpifolia, Jacq. Stem shrubby, unarmed, powdery : leaves large, cordate- 



