flagelliformis. 
168 _ CACTEE. 
into the house whilst in flower, to adorn any of the rooms: they 
are red or pink. 
Flagelliform Torch-thistle or Creeping Cereus. 
Clt. 1690. Pl. trailing. 
59 C. e’propnis (D. C. mem. cact. in mem. mus. 17. p. 117.) 
plant creeping a little, cylindrical, with 7-8 very blunt, rather 
repand ribs; areole velvety, but convex in the adult state ; 
prickles 12-13 in each fascicle, stiffish, yellow, radiating, having 
the 2 or 3 central ones erectish. h.D.S. Native of Mexico. 
Coulter, no. 32. Habit of C. flagelliférmis, but 3 times 
slenderer. 
Slender Torch-thistle or Creeping Cereus. Clt. 1830. Pl. pr. 
60 C. Humsétpru (H. B. et Kunth, nov. gen. amer. 6. p. 66. 
under Cáctus) stems procumbent, with 10 or 12 ribs, glabrous ; 
angles tubercled; tubercles bearing stiff bristles; style much 
exceeding the corolla. h.D.S. Native about Quito, in fields 
between Sondorillo and San Felipe. Said to be very like C. 
Flowers red. 
Humboldi’s Torch-thistle or Creeping Cereus. Shrub pr. 
61 C. 1cosicdnus (H. B. et Kunth, 1. c.) stems procumbent, 
simple, usually with 20 angles; angles bearing fascicles of 
bristles : style length of petals, 8-cleft at the apex. h.D.S. 
Native of Quito, in dry places near Nabon. According to the 
authors, this plant is sufficiently distinct from the foregoing. 
Flowers white. ; 
Twenty-angled Torch-thistle. Shrub proc. 
62 C. serium (H. B. et Kunth, l. c.) stem erect, with 11 
angles ; angles bearing fascicles of prickles ; stamens and style 
about equal in length, but exceeding the corolla a little ; stigma 
8-parted. h. D. S. Native of Quito, in sandy places, near 
Riombamba, at the foot of Mount Chimborazo, where it is called 
Pitahaya by the natives. According to the authors this species 
is sufficiently distinct from C. Humbéldtii. Flowers rose-co- 
loured. Fruit red. 
Hedge Torch-thistle. Shrub 6 feet. 
63 C. Carive’nsis (H. B. et Kunth, 1. c.) stems in fascicles, 
elongated, creeping, branched, somewhat tetragonal; angles 
tubercled ; each tubercle bearing a fascicle of stellate bristles. 
h. D. S. Native of New Andalusia, near Caripe, growing 
on rotten wood. Very like C. flagelliformis in habit, but both 
the flowers and fruit are unknown, and therefore the place 
which it should occupy in this genus is doubtful. 
Caripe ‘Yorch-thistle. Shrub creeping. 
Fl. Mar. Ju. 
* * Stems with 5 or 6 angles. 
64 C. Granpirtorus (Mill, dict. ed. 8. no. 11. Haw. syn. 
184.) stems rooting, diffuse, climbing, 5-6-angled; bristles 5-8 
in each fascicle, hardly longer than the down from which they 
proceed. ).D.S. Native of the West India Islands, and in 
many parts of the main land of South America. Cactus gran- 
diflorus, Lin. spec. p. 668. D.C. pl. grass. t. 52. Andr. bot. 
rep. t. 508.—Mill. fig. t. 90.—Trew. ehret. t. 31, 32.—Volk. 
hesp. 1. t. 234. This species, when of sufficient strength, will 
produce many exceeding large, beautiful, sweet-scented flowers, 
like those of most of the species of very short duration, hardly 
continuing 6 hours full blown, nor do the flowers ever open 
again when once closed. They begin to open between 7 and 8 
o'clock, in the evening, are fully blown by 11 o’clock, and by 
3 or 4 o'clock in the morning they fade, and hang down 
quite decayed; but during their short continuance there is 
hardly any flower of greater beauty, or that makes a more 
magnificent appearance; for the calyx of the flower, when 
open, is near a foot in diameter, the inside of which being of a 
splendid yellow colour, appears like the rays of a bright star, 
the outside is of a dark brown; the petals being of a pure 
white add to the lustre; the vast number of recurved stamens 
in the centre of the flower, make a fine appearance: add to all 
IV. Cereus. 
this, the fine scent, which perfumes the air to a considerable 
distance; there is scarcely any plant which deserves a place in 
the hot-house so much as this, especially as it may be trained 
against the wall, where it will not take up any room. The 
flowers make a most magnificent appearance by candle-light, 
sometimes there may be 6 or 8 flowers open upon one plant at 
the same time; and there will be a succession of them for several 
nights together, provided the plant is large and healthy. 
Great-flowered Torch-thistle or Night-flowering Cereus. Fl. 
June, Aug. Clt.1700. Shrub cl. 
65 C. srrnuzosus (D. C. mem. cact. in mem. mus, 17. p. 117.) 
plant a little branched, creeping, and climbing somewhat, nearly 
terete, with 5-6 hardly exserted, acutish ribs, and with broad, 
bluntish furrows ; areolæ, when young, velvety ; prickles 8 in 
each fascicle, very short, stiff, when young yellowish, but after- 
wards becoming brownish, the lateral ones radiating. R. D. S. 
Native of Mexico. Coulter, no. 27. Habit of the stems like 
those of C. grandiflòrus, but the prickles are very different. 
Spinulose Torch-thistle. Shrub cl. 
66 C. renraconus (Lin. hort. cliff. p. 182.) plant erect, 
jointed, slender, pale green, 5-angled; ribs repand ; prickles 
naked at the base, nearly equal, slender, straw-coloured, with 
5-6 radiating ones in each fascicle, and 1 central one. R. D.S. 
Native of South America. Cactus pentagonus, Lin. spec. 666, 
Haw. syn. 180. rev. 77. Salm-Dyck. in litt. C. prismaticus 
and C. réptans, Willd. enum. suppl. 32. This is a very poly- 
morphous species, varying with 3-4-5 angles, sometimes much 
compressed, and sometimes the angles are nearly obliterated. 
The plant never throws out lateral roots. Flowers large, white. 
Pentagonal-stemmed Torch-thistle. Fl. July. Clt. 1769. 
Shrub 3 feet. 
67 C. Ravicans (D. C. prod. 3. p. 468.) plant prostrate, 
jointed, pale green, with 3-5 angles; prickles stiff, slender, ru- 
fous, naked at the base, with 6-9 radiating ones in each fascicle, 
and 1 central one, which is rather elongated. k. D. S. Na- 
tive of South America. Cactus réptans, Salm-Dyck. in litt. not 
Willd. It differs from C. pentagonus in the stems being pros: 
trate and rooting, not erect. 
Rooting Torch-thistle. Shrub creeping. EA 
68 C. uvu‘miits (D. C. prod. 3. p. 468.) plant jointed, divari- 
cate, rooting, green, with 4 or 5 angles; ribs much comptem 
and repand ; fascicles of prickles crowded ; prickles about equa 
in length to the white tomentum from which they arise: 8-10 
radiating white bristle-formed ones in each fascicle and 3 stiffish 
straw-coloured, central ones. h.D. S. Native country an 
flowers unknown. C. gràcilis, Salm-Dyck. in litt. but not 0 
Haw. Plant humble, with the joints a little elongated and di- 
varicating, deeply furrowed. 
Humble Torch-thistle. Shrub. 
69 C. arsiseròsus (Haw. rev. 77.) plant creeping, gte™ 
with 5 angles ; prickles bristle-formed, white, stellately expan R 
shorter than the rufous wool from which they arise. k. 1" 
Native of St. Domingo. The rest unknown. 
White-bristled Torch-thistle. Clt. 1816. 
**# Stems with 3-4 angles. 
70 C. quaprancuna'ris (Haw. syn. p. 181.) plant creeping 
3-4-angled ; angles hardly channelled ; spines 5-7 in each fas- 
cicle, hardly stellate. hk. D. S. Native of the West Indies. 
—Plum. ed. Burm. t. 199. f. 1. Flowers white, opening at 
night, beautiful, and sweet-scented. i 
Quadrangular Torch-thistle. Clt. 1809. Shrub creeping. 
71 C. rripreris (Salm-Dyck. in litt. ex D.C. prod. 3. P- ies 
plant jointed, erectish, rooting, green, 3-4-angled ; ribs me 
compressed, rather repand; fascicles of spines crowded, ™! 
8 radiating ones in each fascicle, and 3 stiffish central bs 
hk. D. S. Native country unknown. It differs from C. grae iiy 
Shrub creeping: 
