CACTEiE. III. ECHINOCACTUS. 



163 



Var. ft, purpiireus (D. C. prod. 3. p. 462.) Melocactus pur- 

 pureus, striis in spiram contortis, Plum. spec. 1 9. mss. vol. 8. t. 

 8. Cactus nobilis, Lam. diet. 1. p. 537. Native of St. Do- 

 mingo. The whole plant is purple, with white prickles. Per- 

 haps a proper species, or a true species of Melocactus, ex Salm- 

 Dyck in litt. 



Intorted-sp'med Hedgehog-thistle. Fl. June, July. Clt. 1768. 

 PI. 1 foot. 



18 E. SALMIA'NUS (Link et Otto, diss. p. 14. t. 13.) ribs 14- 

 15, bluntish ; 3 central prickles erect, ray ones 15, spreading, in 

 each fascicle. Tj . D. S. Native of Curassoa. Plant 4 inches 

 long, and 4-j- inches thick, with the furrows narrow. Prickles 

 reddish. Top of plant impressed. Perhaps the same as Melo- 

 cactus pyramidalis, but in a young state. Flowers unknown. 



Salm-Dyck's Hedgehog-thistle. PI. -| foot. 



19 E. HY'STRIX (Haw. in phil. mag. Feb. 1830, p. 115.) plant 

 roundish, usually with 12 angles ; spines straight, an inch and a 

 half long, fulvous, much longer than the wool from which they 

 rise. f2 . D. S. Native of the West Indies. Cactus hystrix, 

 Haw. suppl. p. 73. Cereus hystrix, Sweet. Flowers unknown. 

 Like E. Salmianus, but differs in the plant being more oblong, 

 and in the spines being much fewer. 



Porcupine Hedgehog-thistle. Clt. 1808. PI. | foot. 



20 E. TUBERCULA'TUS (Link et Otto, diss. p. 16. t. 26.) plant 

 nearly globose, green, depressed at the top ; ribs 8, bluntish ; 

 fascicles with 3 central straight prickles, and 7 spreading, rather 

 recurved ray ones, which become gradually smaller from the 

 centre. I? . D. S. Native of Mexico. Plant 4 inches high, 

 and 3^ inches thick, with the furrows narrow. Central prickles 

 of the fascicle an inch long, the ray ones gradually decreasing in 

 length. Flowers unknown. 



Tuberculated Hedgehog-thistle. PI. \ to j- foot. 



21 E. GLADIA'TUS (Link et Otto, diss. p. 17. t. 17.) plant 

 oval-oblong, glaucescent, depressed at the apex; ribs 14-22, 

 bluntish ; prickles 10 in each fascicle, 3 central ones the largest, 

 flattened, and elongated : middle one of the 3 erect : ray ones 

 spreading much. Tj . D. S. Native of Mexico. Plant 5 inches 

 high, and 4 inches thick. Prickles canescent, crowded at the 

 top, larger ones 2 inches long. Flowers unknown. 



Gladiate-spined Hedgehog- thistle. PI. |- foot. 



22 E. SUBULI'FERUS (Link et Otto, diss. p. 16. t. 27.) plant 

 subglobose, green, not depressed at the apex; ribs 8-10, blunt, 

 tubercled ; central prickles large, erectish, recurved, and 4-5 

 spreading, and the 4-6 outer ones, divaricate, and slender, in 

 each fascicle. Jj . D. S. Native of Mexico. Plant 2-J inches 

 high, and 2 inches thick, with the ribs evidently composed of 

 conflated tubercles. Prickles hoary brown ; the larger ones 2 

 inches long, and the smaller ones about 4 lines loflg. Flowers 

 unknown. 



Ami-bearing Hedgehog-thistle. PI. -| to % foot. 



23 E. DEPRE'SSUS (D. C. prod. 3. p. 463.) plant nearly glo- 

 bose, depressed at the apex ; ribs vertical, about 20 in number, 

 obtuse, and somewhat tubercled ; fascicles of prickles crowded ; 

 prickles rising from fascicles of white tomentum, stiff, very pale 

 brown: central ones in each fascicle 3-4, and 10-12 ray ones: 

 the lower one of these very strong. Tj . D. S. Native of South 

 America. Melocactus? depressus, Salm-Dyck in litt. Cactus 

 depressus, Haw. syn. 173.? 



Depressed Hedgehog-thistle. Clt. 1798. PI. | foot. 



24 E. ORTHACA'NTHUS (Link et Otto, diss. p. 18. t. 18.) top 

 of plant depressed; ribs 18, bluntish; prickles 7 in each fas- 

 cicle : the central one of these strong, larger, and straight : the 

 rest spreading. T? . D. S. Native of Monte Video. Plant 2| 

 inches in diameter, with narrow furrows. Prickles canescent : 

 the larger ones 9 lines long, and the rest about 5 lines long. 

 Flowers unknown. 



Straight-spined Hedgehog-thistle. PI. ^ to ^ foot. 



25 E. ARCUA'TUS (Link et Otto, diss. p. 15. t. 23.) plant 

 subglobose, glaucescent, not depressed at the apex ; ribs 20, 

 arched ; prickles 7 in each fascicle, spreading, and recurved. 



Jj . D. S. Native of Monte Video. Plant 3 inches high, and 

 24 thick, with broad furrows. Sides of ribs not impressed. 

 Prickles of a hoary fucescent colour, 4-6 lines long. Flowers 

 unknown. 



Arched-ribbed Hedgehog-thistle. PI. -J foot. 



26 E. PARVISPI'NUS (D. C. prod. 3. p. 463. Haw. in phil. 

 mag. Feb. 1830. p. 114.) plant nearly globose, umbilicate at the 

 apex ; ribs 15, compressed ; prickles small, white, fulvous at the 

 apex, rising from white tomentum, 7-9 in each fascicle : the cen- 

 tral one of these straight, and the ray ones 6-8 in number, and a 

 little recurved. Tj . D. S. Native of South America. Melo- 

 cactus parvispinus, Haw. suppl. 73. Salm-Dyck in litt. Flowers 

 unknown. Very like E. meonacdnthus, Link et Otto. 



Small-spirted Hedgehog-thistle. PI. |. foot. 



27 E. INTRICA TUS (Link et Otto, diss. p. 19. t. 24.) plant 

 oval, green, with a depressed tubercled top ; ribs 20, bluntish ; 

 fascicles of prickles crowded, 18-20 in each fascicle : the 4 cen- 

 tral ones of these larger and erect, the rest spreading, outermost 

 ones divaricate. Pj . D. S. Native of Monte Video. Plant 4 

 inches high, and Z\ thick. Sides of ribs depressed. Prickles 

 of a hoary-fuscescent colour: the larger ones 8 lines long. 

 Flowers unknown. 



Intricate Hedgehog-thistle. PI. foot. 



28 E. MEONACA'NTHUS (Link et Otto, diss. p. 19. t. 15.) plant 

 oblong, glaucescent, with the top depressed ; ribs 14, arched; 

 prickles 9 in each fascicle, short and straight, and one central. 



Jj . D. S. Native of Jamaica. Plant 63 inches high, and 4^ 

 broad ; ribs usually bent. Prickles yellowish, rising from short 

 wool, 4 lines long. The form of the plant is elongated, and like 

 that of a creeping Cereus. Flowers unknown. 

 Less-spined Hedgehog-thistle. PI. \ foot. 



29 E. DENUDA'TUS (Link et Otto, pi. rar. hort. berol. t. 9.) 

 plant subglobose, green, with 6-8 bluntish ribs ; spines 5-8 in 

 each fascicle, all spreading ; involucrum with few leaves. J? . 

 D. S. Native of Brazil. 



Naked Hedgehog-thistle. PI. 



30 E. TOIITUOSUS (Link et Otto, pi. rar. hort. berol. t. 15.) 

 plant nearly globose, depressed at the top, green, with 4 arched 

 ribs ; the 4-6 middle spines in each fascicle a little larger and 

 thicker than the rest, which are numerous, but all are nearly 

 equal, spreading, and twisted. ^ . D. S. Native of Brazil. 



Twisted-spined Hedgehog-thistle. PL 



31 E. ERINA'CEUS (Haw. in phil. mag. Feb. 1830, p. 114.) 

 plant globular, usually with 14 angles; spines inclining, 9 lines 

 long, numerous, somewhat recurvedly divaricate, fulvous, shorter 

 than the wool from which they originate ; fascicles of spines ap- 

 proximate. Tj . D. S. Native of South America. Cactus eri- 

 naceus, Haw. suppl. p. 74. Very like Melocactus polyacanthus, 

 Link et Otto, in form, but differs from it in the number of the 

 angles, and in the absence of the woolly flowering top ; but the 

 fascicles of spines are nearly similar. 



Erinaceous Hedgehog-thistle. Fl. June, Aug. Clt. 1818. 

 PI. foot. 



f The two following species from their habit in a seedling state 

 appear to belong to the present genus, but are not described; 

 they are in the gardens of Edinburgh and Glasgow under the 

 name of Cactus, and have been brought from Chili. 



1 E. corrugala, Gill. mss. 2. E.foliosa, Gill. mss. 

 Cult. See Mammillaria, p. ICO. for culture and propagation. 

 Grotesque plants, with the habit of the last genus. 

 v 2 



