300 CACTE^. 



date at the base, pedatinerved, puberulous beneath : lobes spreading, oblong or ovate-oblong, 

 blunt: stipules cordate-roundish, large, persistent; ealyx-limh inflexed, 6-spurred at the 

 base, campanulate, abruptly milahiate at its truncate mouth : Up roundish or ovate-oblong, 

 produced at the top into a long, filiform tail.—Jacci. Mdog. t. 26 ; Bot. Mag. t. 3769.— A. 

 macrura, Mart. A. caudata. Hook, (non i.)-— Leaves 3"-6", stipules 1-1 i" ^mm.; inflated 

 base of the calyx-limb ovoid, l"-2" lone : basilar spurs bluntly fiHform, Z" -3' long : upper 

 portion of the tube 2"-2V' long : lip 8'" diam., tail several inches to above a foot long.— 

 Hab. Jamaica!, Dist., Wils.; Antigua!, Wullschl.; Dominica !, /mr. ; Barbadoes!; Tri- 

 nidad!, Sch.; [S. Thomas!, Guadeloupe!; Panama!, Guiana!, Brazil !]. 

 **** Calyx-lip single, continuous vnth the tube. 

 6. A. obtusata, Sw. Stem twining, glabrous ; leaves cordate-oblong, bluutish, pe- 

 datinerved, puberulous beneath : basilar sinus narrow, open : stipules none ; calyx-limb 

 "straight : lip continuous with the tube, ovates blunt, devoid of a terminal appendage, ex- 

 ternally pubescent."— ffejB. Bd. Burm. t. 33.— Leaves 3"-4", calyx-limb 1'' long.— Hab. 

 S. Vincent!, Guild.; [Guadeloupe I]. 



LXXXrV. CACTE^. 



Sepals, petals, and stamens indefinite, connected below. Pistil paracarpous : ovary in- 

 ferior, unilocular, many-ovulate : stigmas distinct. Pericarp baccate. Seeds exalbuminose, 

 or with a scanty, central albumen. — Succulent plants ; leaves mostly abortive, transformed 

 into spine fascicles j flowers sessile. 



The hemes of many Cacteee are eatable. Of this Order I possess only scanty materials, 

 chiefly collected by the Kev. Mr. WuUschlaegel ; to these I add only such species, the spe- 

 cial habitat of which has been verified in the country. 



1. MAMILLARIA, Haw. 



Calyx-tube produced beyond the ovary, naked below. Embryo nearly undivided : cotyle- 

 dons minute, pointed ; albumen nearly wanting. — ^\xxa. globose or cylindrical, tubercled: 

 tubercles terminated ioith a fascicle of spines ; flowers usually inserted into the tubercle- 

 axils. 



1. la. simplex, .ffftw. "Stem simple, globose, at length obovoid-oblong : tubercles 

 conical -ovate, blunt, bearing scanty wool on the areolae: spines straight, 12-16 radial 

 spreading, 4-5 central as stout : axils glabrous ; flowers axillary, yellow (§'" long)."— ZWj. 

 PI. 2. t. 32.— Cactus mamillaris, L. — 4."-5" high ; tubkcles' 6'"-7"', spines 4'" long.— 

 Hab. Jamaica {P. Br.) ; [Haiti, Venezuela]. 



S. MELOCACTUS, DC. 



Character of Mamillaria, but the minute cotyledons "globose.'^ — Stem globose or conical, 

 devoid of prominent tubercles, costate, terminated with a large, moolly crown : flowers 

 small, concealed within its wool. 



2. 'VH. communis, DC. Stem globose, at length ovate-oblong: ridges 12-20, argute, 

 vertical : areolse 12(-6)-spinose ; spines stout, rigid, exterior spreading, inferior longest ; 

 crown cylindrical : its slender spines as long as the wool. — Tuss. Fl. 2. t. 27 ; Desc. Fl. 7. 

 t. 315.; — Cactus Melocactus, L. — Apparently variable in the number of ridges and spines ; 

 our specimens answer to Pfeiffer's diagnosis of o ; Tussac's figure has shorter and less unequal 

 spines. Stem "at length above 1' high :" spines lZ"'-6"' long ; flowers crimson. — Hab. 

 Jamaica (Macf.), gregarious in dry savannahs ; Antigua I, WullscJd. ; [Haiti, etc.]. 



3. CEKEUS, Haw. 



Calyx-tube produced beyond the ovary, scaly with adnata exterior sepals. Stamens mul- 

 tiserial upon the corolla-tube. Fmbryo usually curved : cotyledons incumbent to the hilum : 

 albumen nearly wanting. — Stem costate ; flowei-s lateral. 



