CACTE.E. IV. CEREUS. 



169 



to which it is nearly allied, in the stems being for the most part 

 3-angled, rarely 4-angled, and never 5-angled, in being more 

 erect, and in the joints being longer and broader, as if they were 

 winged, and also in the prickles being longer. 



Three-winged Torch-thistle. Clt. ? Shrub. 



72 C. SPECIOSISSIMUS (Desf. mem. mus. 3. p. 190. t. 9. under 

 Cactus) plant erect, 3-4-angled ; angles toothed ; prickles subu- 

 late, straight, rising from white tomentum ; limb of flower ex- 

 panded ; genitals declinate. Tj . D. S. Native of Mexico. 

 Cactus speciosits, Cav. hort. madr. Willd. enum. suppl. p. 31. 

 Colla, hort. rip. t. 10. but not of Bonpl. Cactus speciosissimus, 

 Ker. bot. reg. 486. herb. amat. t. 391. Flowers large, of a 

 beautiful scarlet colour, somewhat violaceous inside. Genitals 

 white. This is a most splendid plant when in flower, and is now 

 very common in the gardens. 



Var. ft, Infrons (Haw. suppl. p. 76.) plant dwarfer, more de- 

 cumbent, and throwing out more roots. 



Very shorvy Torch-thistle. Fl. July, Aug. Clt. 1816. Sh. 

 3 to 6 feet. 



78 C. TRIANGULA'RIS (Haw. syn. p. 180.) plant creeping, tri- 

 gonal ; prickles short, 4 in a fascicle, somewhat decussate, fj . 

 D. S. Native of Mexico. Cactus triangularis, Lin. spec. 666. 

 Lam. diet. 1. p. 541. Sims, bot. mag. 1884. Cactus triangu- 

 laris aphy'llus, Jacq. amer. p. 152. Plum. ed. Burm. t. 200. f. 1. 

 Bradl. succ. pi. 3. without a flower. Flowers greenish on the 

 outside, and white inside, larger than any of the species. Fruit 

 .naked, scarlet, size and form of a goose's egg. 



Var. ft, major (D. C. prod. 8. p. 468.). Native of St. Helena. 



Var. y, pictus(D. C. 1. c.) variegated with yellow. 



Triangular Torch-thistle. Fl. July, Aug. Clt. 1690. ' Sh. 

 1 to 2 feet. 



74 C. UNDA'TUS (Haw. in phil. mag. nov. 1829. p. 109.) plant 

 large, climbing, triangularly furrowed ; joints large, rather lobu- 

 lately crenated, sometimes like a chain. fj . D. S. Native of 

 China. Very like C. triangularis, but much larger ; and the 

 branches are greener and more radicant. Fascicles of spines 

 small. 



Waved Torch-thistle. Clt. 1828. Shrub cl. 



75 C. SE'iiGER(Haw. in phil. mag. nov. 1829. p. 108.) plant 

 erectish ; branches few, quadrangular ; fascicles containing about 

 20 spines each, 3 or 4 of which are linear, radiating, and nearly 

 equal, pale. Jj . D. S. Native of Brazil. The habit of the 

 plant is referrible to Stapelia asterias, but taller and the angles 

 more concave ; wool at base of spines short. 



' Brittle-bearing Torch-tli\al\e. Clt. 1828. Shrub. 



76 C. TRIQUETER (Haw. syn. 181.) plant jointed, erectish, 

 rooting, green, triangular ; angles repand, with the fascicles of 

 prickles remote ; prickles rising from fuscous tomentum, ray 

 ones setaceous and deciduous, central 3-4, stiff", short, and ful- 

 vous. ^ . D. S. Native of South America. C. prismaticus, 

 Desf. hort. par. Prickles dirty yellow, 2-3 lines long, rising 

 from short tomentum. Stem 5-6 feet high, branched. * Flowers 

 unknown. 



Triquetrous-stemmed Torch-thistle. Clt. 1794. Shrub 5 to 

 6 feet. 



77 C. TENUISPINUS (Haw. in phil. mag. feb. 1827. p. 125.) 

 plant weak, branched, somewhat articulated, climbing and root- 

 ing; branches very slender and triangular; bristles very slender, 

 bent, wool-formed. lj . D. S. Native country unknown, but 

 probably in some part of South America. Bristles in crowded 

 interwoven fascicles along the angles of the stems, which they 

 hide. Perhaps the same as C. Myosusus. 



Slender-spined Torch-thistle. Clt. 1826. Shrub 1 foot. 



78 C. TRIGONUS (Haw. syn. 181.) plant creeping, triquetrous; 

 angles hardly channelled ; prickles 5-7 in a fascicle, stellate. 



fj . D. S. Native of the West India Islands. Cactus triqueter 



VOL. III. 



ft. Haw. misc. nat. 199. Plum. ed. Burm. t. 200. f. 2. Cdc- 

 tus triangularis folidsus, Jacq. amer. 152. ex Lam. diet. 1. p. 

 541. Flowers white (ex Plum.) and the fruit of a violaceous 

 scarlet colour ; but the fruit, according to Jacquin, is of a shin- 

 ing scarlet colour ; there are therefore probably two species 

 confused under this name. 



Trigonal-stamened Torch-thistle. Clt. 1809. Shrub cl. 



79 C. PRISMA'TICUS (Salm-Dyck. in litt. but not of Willd. ex 

 D. C. prod. 3. p. 469.) plant articulated, erectish, rooting, green, 

 triangular ; ribs repand ; fascicles of prickles crowded ; prickles 

 nearly equal, fulvous, rising from fuscous tomentum, 7 radiating 

 ones and 2 or 3 central ones in each fascicle. Jj . D. S. Native 

 country unknown. Plant slenderer and more humble than C. 

 triqueter ; prickles smaller and more numerous ; and the fas- 

 cicles are more crowded. 



Prismatic Torch-thistle. Clt. 1818. Shrub cr. 



80 C. COCCINEUS (Salm-Dyck. in litt. ex D. C. prod. 3. p. 

 469.) plant with long joints, rooting, deep green, triangular ; 

 ribs compressed, repand ; prickles rising from yellow tomentum, 

 radiating ones few, pilose, white, and 4 rather recurved, stiff, ful- 

 vous, central ones in each fascicle. fj . D. S. Native of 

 Brazil, among rocks on the mountains. Flowers said to be 

 numerous, large, and scarlet. 



Scarlet-Rowered Torch-thistle. Clt. ? Shrub cr. 



81 C. EXTE'NSUS (Salm-Dyck. in litt. ex D. C. 1. c.) plant 

 with long joints, rooting, green, triangular ; ribs repand; prickles 

 rising from fulvous tomentum ; radiating ones pilose, whitish, 

 10-12 in each fascicle, and 2-4 small, stiff", yellowish, central 

 ones. 1} . D. S. Native country unknown. Perhaps only 

 a variety of the preceding, but less spinose. Joints much ex- 

 tended, and while young margined with red ; and with the 

 prickles and hairs rose-coloured. 



Extended Torch- thistle. Clt. ? Shrub cr. 



82 C. SQUAMULOSUS (Salm-Dyck. in litt. ex D. C. 1. c.) plant 

 erect, jointed, rooting a little, green, triangular ; ribs much com- 

 pressed, repandly crenated, furnished with an ovate acute 

 scale, and numerous white hairs in the crenatures. >j . D. S. 

 Native of Brazil. This is a very singular plant, with the sides 

 of the joints 2 inches broad, and 4-toothed at the angles, and 

 for the most part margined with red ; teeth as in Stapelia, fur- 

 nished each with a marcescent scale or leaf. Flowers small, 

 solitary, when dried permanent, yellow ; petals 6-8, acute. Style 

 filiform, 8-cleft at the apex. Fruit unknown. 



Scaly Torch-thistle. Clt. ? Shrub 1 to 2 feet. 



83 C. SETA'CEUS (Salm-Dyck. in litt. ex D. C. 1. c.) plant 

 jointed, erect, rooting a little, deep green, triangular ; ribs rather 

 compressed, somewhat repand ; hairs rising from white tomen- 

 tum, with 7-9 radiating ones in each fascicle, and in the middle 

 of each fascicle is a central soft prickle. fj . D. S. Native 

 of Brazil. 



Bristly Torch-thistle. Clt. ? Shrub 1 to 2 feet. 



84 C. MYOSU'RUS (Salm-Dyck. in litt. ex D. C. 1. c.) plant 

 rather articulated, erect, rooting a little, slender, margined with 

 red, 3-4-angled ; ribs crenulated, furnished with pencil-like 

 fascicles of white hairs at the crenatures. ^ . D. S. Native of 

 Brazil. Sides of stem hardly 3 lines broad. Pili long, erect, 

 especially on the young branches. The rest unknown. 



Mouse-tail Torch-thistle. Shrub. 



85 C. TE'NUIS (D. C. prod. 3. p. 469.) plant low, climbing, 

 acutely trigonal, with some roots issuing from the sides ; 

 hairs in fascicles along the angles, elongated, soft and adpres- 

 sed ; flowers sessile, usually with 5 sepals and 5 petals. 

 Jj . D. S. Native of Brazil. Cactus tenuis, Schott. ined. 

 Flowers small, rose-coloured, hardly open, rising from among 

 the fascicles of hairs ; tube very short. 



Slender Torch- thistle. Clt ? Shrub. 



