CACTE. III. 
Var. B, purptreus (D. C. prod. 3. p. 462.) Melocactus pur- 
pùreus, striisin spiram contortis, Plum. spec. 19. mss. vol. 3. t. 
8. Cactus nóbilis, Lam. dict. 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 Melocáctus, ex Salm- 
Dyck in litt. 
Intoried-spined Hedgehog-thistle. Fl. June, July. Clt. 1768. 
. Pl. 1 foot. 
18 E. Sarmra‘nus (Link et Otto, diss. p. 14. t. 15.) ribs 14- 
15, bluntish ; ‘3 central prickles erect, ray ones 15, spreading, in 
each fascicle. h.D.S. Native of Curassoa. Plant 4 inches 
long, and 44 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. Pl. 4 foot. 
19 E. ny’srrrx (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. h.D.S. Native of the West Indies. Cactus hystrix, 
Haw. suppl. p. 73. Céreus hystrix, Sweet. Flowers unknown. 
Like Æ. Salmidnus, but differs in the plant being more oblong, 
and in the spines being much fewer. 
Porcupine Hedgehog-thistle. Clt. 1808. Pl. 4 foot. 
20 E. rusercua‘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. h.D.S. Native of Mexico. Plant 4 inches high, 
and 31 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. Pl. 4 to 4 foot. 
21 E. crapra‘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. h.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. Pl. 4 foot. 
22 E. susunrrervus (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. h. D.S. Native of Mexico. Plant 24 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 long. Flowers 
unknown. 
Awl-bearing Hedgehog-thistle. Pl. 4 to 4 foot. 
23 E. pepre’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. k.D. S. Native of South 
America. Melocactus? depréssus, Salm-Dyck in litt. Cactus 
depréssus, Haw. syn. 173.? i 
Depressed Hedgehog-thistle. Clt. 1798. PI. z foot. 
24 E. orruaca’ntuus (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. h.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. 
lowers unknown. 
Ecurnocactus. 163 
Straight-spined Hedgehog-thistle. Pl. 4 to 4 foot. 
25 E. arcua‘rus (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. 
h. D. S. Native of Monte Video. Plant 3 inches high, and 
2% 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. Pl. + foot. 
26 E. parvisprnus (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. h. D.S. Native of South America. Melo- 
cáctus parvispinus, Haw. suppl. 73. Salm-Dyck in litt. Flowers 
unknown. Very like E. meonacdnthus, Link et Otto. 
Small-spined Hedgehog-thistle. Pl. 4 foot. 
27 E. INTRICATUS (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. h.D.S. Native of Monte Video. Plant 4 
inches high, and 34 thick. Sides of ribs depressed. Prickles 
of a hoary-fuscescent colour: the larger ones 8 lines long. 
Flowers unknown. 
Intricate Hedgehog-thistle. PI. 4 foot. 
28 E. meonaca’ntuus (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. 
h. D.S. Native of Jamaica. Plant 63 inches high, and 44 
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 Céreus. Flowers unknown. 
Less-spined Hedgehog-thistle. P1. 5 foot. 
29 E. penupa‘tus (Link et Otto, pl. 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. h. 
D. S. Native of Brazil. 
Naked Hedgehog-thistle. PI. 
30 E. rortudsus (Link et Otto, pl. 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. h.D.S. Native of Brazil. 
Twisted-spined Hedgehog-thistle. PI. 
31 E. errna‘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. k.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. 
Pl. 4 foot. 
+ The two following species from their habitin 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. corrugata, Gill. mss. 2. E. folidsa, Gill. mss. : 
Cult. See Mammillaria, p. 160. for culture and propagation. 
Grotesque plants, with the habit of the last genus. 
¥2 
