CACTEjE. 801 



Sect. 1. Pilocereus. — Calyx-tuhe shortly produced beyond the ovary. Style exserted.— 

 Stem erect, columnar with vertical ridges : areolae woolly or at length glabrate. 



3. C. Swartzii, Gr. " Stein high, nearly simple, blunt at the woolly summit : ridges 

 10, prominent, bluntish, separated by a deep sinus: areolae 10-8-spinose : spines stout, 

 spreading, interior shorter, those of the stem-summit concealed within the wool ; flowers 

 pale-red."— Cactus peruvianus, Sw. 06s. (exclus. syn. Si. et Linn.). Cereus, Mac/. — Cactus 

 fimbriatus, Desc. (Fl. 6. t. 419), though presenting only 8 ridges, is probably the same, and 

 shows the exserted style of Pilocereus, not mentioned by Swartz. — " Stem 6-20' high, 2"-5" 

 thick : spines nearly 1" long ; flowers 2" long : exterior sepals subimbricate." — Hab. Ja- 

 maica (Sw., Mac/.), in the dry, southern savannahs. 



4. C. Curtisii, Lk. Ott. " Stem blunt at the summit: ridges & 1ft, praniMtrt *j 

 gute: areolae convex, woolly : spines stout, equalling the wool, exterttrr » Hi, centra* 4. 

 superior minute ; flowers rosy-variegated : calyx-tube green, naked bekwv ' — Hot hap t 

 3125; Pfeiff'. Cact. t. 11. — C. Royeni, Hook, (non alior.). — Xop»<«*t spines iu>*rt\ 1" 

 flowers 2"loug. — Hab. Grenada (Hook.). 



Sect. 2. Eucereus. — Calyx-tube long, produced beyond the ovary. Jigic nearly «* tantg 

 as Ike included stamens. 



* Stem erect, columnar. 



5. C. eriophorus, Lk. Ott. Stem high, jointed, tapering at the summit, at length 

 subcylindrical : ridges 8-10, blunt-convex : areolae devoid of wool, 9-12-spinose : spiues 

 needle-shaped, 8-10 radial spreading, 1-2 central longer; flowers large, nocturnal, white : 

 calyx-tube covered with long wool. — Pfeiff. Cact. t. 22. — Cactus peruvianus jamaicensis, L. 

 (ex syn. St. et P. Br.). Cereus repandus, Mac/, (non Haw.). — Stem 20' high : joints 2'-4' 

 distant : spines 5"'-2'", on the calyx-tube 8'" long; flowers infundibular, 9"-6" long. — Hab. 

 Jamaica !, Wullschl., Al., in the southern savannahs, Davidson Hills near Falmouth ; [Cuba]. 



6. C. repandus, Haw. " Stem tapering at the summit, subcylindrical : ridges 8-10, 

 depressed, separated by narrow furrows : areolae devoid of wool, 9-10-spinose : spines needle- 

 shaped, short, 7-8 radial, 2 central ; flowers large, white : calyx-tube devoid of wool." — 

 DC. PI. Grass, t. 161 ; Tuss. Fl. 2. t. 33.— Cactus, L. (ex syn. St.). C. Royeni, DC. C. 

 peruvianus, Tuss. — The occurrence of this species in Jamaica rests on a wood-specimen pre- 

 served in the Economic Museum of Kew, and upon Sloaue's authority, who however does 

 uot mention sufficiently the character, but distinguishes this from the preceding by lower 

 growth and a yellow (not red) berry : both are indeed quite similar in the flower. — Hab. 

 Jamaica, with the preceding (SI.). 



** Branches scandent, radicant. 



7- C triangularis, Haw. " Branches triquetrous : one sinus nearly flat, two deep: 

 areolae 4-2-spinulose : spinules very short, iuferior longest; flowers large, nocturnal, white." 

 —Desc. Fl. 7. t. 519.— Cactus, X.—" Spinules l"'-2"' long; flowers, when expanded, 8" 

 diam." — Hab. Jamaica (Mac/.), common on rocks ; [Mexico]. 



8. C. grandiflorus, Haw. " Branches slightly 5-7 -angular : areola? 5-12-spinulose: 

 spinules short, nearly equalling the wool ; flowers large, nocturnal, white." — Desc. Fl. 1. t. 

 65. — Cactus, L. — " Spinules 2"'-3"' long ; flowers fragrant, when expanded 6"-8" diam." — 

 Hab. Jamaica (Mac/.), on rocks and decayed trees ; Caribbean Islands. 



9. C. flagelliformis, Mill. " Branches cylindrical : tubercles 10-12-seriate, 11-16- 

 spinulose : spinules short, radial 8-12, central somewhat longer, 3-4 ; flowers infundibular, 

 crimson."— Tuss. Fl. 2. t. 28 ; Desc. Fl. 1. 1. 67— Cactus, L— " Spinules 2"'-3'", flowers 

 2£"-3" long."— Hab. Jamaica (SI., Sw.), on trees, along the coast; [trop. America]. 



4. RH IPS AXIS, G. 



Calyx-tube short, equalling the ovary, naked : limb small, expanded. Berry crowned with 

 the marcesceut flower. Seeds obovoid s embryo curved, with minute cotyledons : albumen 



scanty. stem and branches cylindrical or foliaceous-winged, unarmed; flowers in the 



rrenatnres of the foliareous, or lateral on the cylindrical branches. 



