CACTEA. 
on the back ; spines red, stiff, rather incurved, disposed in ap- 
proximate fascicles, which are very woolly towards the tops of 
the angles; cap roundish, furnished with a few red setaceous 
spines; flowers red. h. D. S. Native of South America. 
Cactus Lamarckii, Coll. hort. ripul. append. 3. t. 7. 
Lamarck’s Melon-thistle. Pl. 3 foot. 
3 M. macraca’ntavs (Link et Otto, diss. p. 9. t. 12.) plant 
roundish, light green, with 14 angles; ribs straight; spines in 
fascicles, very thick, whitish, but of a brownish red-colour at the 
apex: outer 12 radiating, central, 4 large and straight. h. D. 
S. Native of St. Domingo. Cactus macracanthos, Salm-Dyck, 
obs. 1820. p. 1. Haw. rev. p. 69. Flowers unknown, but the 
spadix or woolly head is depressed at the top. 
Long-spined Melon-thistle. Clt. 1820. Shrub 1 foot. 
4 M. pyramtpa'tis (Link et Otto, diss. p. 10. t. 25.) plant 
conical or pyramidal, with 17 angles; ribs rather oblique, cre- 
nated ; spines very long, in fascicles, of a brownish red co- 
lour: outer 14 radiating in 2 series, with 2 or 3 straight and 
very long. h.D.S. Native of Curassoa. Cactus pyrami- 
dalis, Salm-Dyck, obs. 1820. p. 4. Stem when young crowded 
with spines. Spadix or woolly head cylindrical, depressed at 
the apex. 
Pyramidal Melon-thistle. Shrub 1 foot. 
5 M pracentirérmis (D.C. prod. 3. p. 460.) plant hemis- 
pherical, depressed, green, with 12 or 14 angles; ribs very 
blunt; prickles 8-12 in a fascicle, unequal, recurved, strong. 
b. D.S. Native of Brazil. Cactus Melocactus, Besl. hort. 
eystet. 4. ord. f. 1. but not of Lin. C. placentiférmis, Lehm. 
ind. sem. hort. hamb. (1826). Melocactus Besléri, Link et 
Otto, diss. (1827). p. 11. t. 21. Lehman’s name being older 
than Link’s has been here adopted, as being more apt; but 
Link’s figure and description are far better. Spadix or woolly 
head nearly globose, impressed in the vertex. Flowers reddish. 
Prickles blackish. 
Placenta-formed Melon-thistle. Shrub 1 foot. 
6 M. Lanespo’rri (D. C. prod. 3. p. 461.) plant oblong, 
with 17 angles; spines slender, stiff, spreading: top of plant 
floriferous, very villous and very spiny. h. D. S. Native of 
Brazil? Cactus Langsdérfii, Lehm. in sem. hort. hamb. (1826). 
Flowers yellow. Stamens purple. The rest unknown. 
Lang sdorf’s Melon-thistle. Shrub 1 foot. 
+ Species not sufficiently known. 
7 M. Serròwiu (D.C. prod. 3. p. 461.) plant globose, de- 
pressed, glaucescent, woolly and flat in the vertex, with 10 
arched ribs; prickles 7 in each fascicle, recurved : the central 5 
much the largest. h. D. S. Native of Monte Video. Echino- 
cactus Selléwii, Link et Otto, diss. p. 16. t. 22. Melacáctus 
Species secundum Salm-Dyck, who confirms that the plant is 
woolly at the top, and is analogous to M. placentiformis, 
Plant 2 inches high, and 43 inches thick. Prickles 8-10 lines 
long, fuscescent. Flowers unknown. 
Sello’s Melon-thistle. Pi. 4 foot. 
8 M. rotyaca’ntHus (D. C. prod. 3. p 461.) plant oval, 
glaucescent, with a flat woolly apex, and with 21 blunt vertical 
ribs; prickles 8 in each fascicle: the upper 2 of these smaller 
than the others. h.D.S. Native of Brazil in the province of 
Rio Grande. Echinocdctus polyacanthus, Link et Otto, diss. 
P. 13. t. 16. f. 1. Stem 4 inches high, and 3 inches thick, 
attenuated at the base, with narrow furrows; prickles cinereous. 
lowers unknown. 
Many-spined Melon-thistle. Shrub 4 foot. 
9 M.? mezocacroipes (D. C. prod. 3. p. 461.) plant globose, 
with 10 angles, having the tops of the angles beset with a series 
of woolly tubercles ; prickles 7 or 8 in a fascicle, rather recurved, 
pale, but becoming gradually brownish towards the apex. k. 
VOL. IIL. 
II. Merocacrtus. 
III. Ecurnocactus. 161 
D. S. Native of Brazil. Cactus melocactoides, Hoffms. verz. 
2.? (1826) 3. p. 24. Habit of M. comminis. 
Melocactus-like Melon-thistle. Pl. 4 foot. 
Cult. A grotesque and singular genus like the last, but of 
larger growth, and beset with stronger spines, without teats. 
The culture, propagation, and treatment of the species are the 
same as that recommended for the last genus. 
IHI. ECHINOCA’CTUS (from exivoc, echinos, a hedgehog, 
and kaxrog, cactos, a name given by Theophrastus to the spiny 
plant ; plants beset with spines like the hedgehog). Link et Otto, 
diss. p. 11. Salm-Dyck, in litt. D. C. prod. 3. p. 461.—Cactus 
species of Haw. 
Lin. syst. Icosdéndria, Monogynia. Sepals numerous, imbri- 
cate, adnate to the base of the ovarium, united into a short 
tube at the base: outer ones in the form of an involucrum: 
inner ones petal-formed. Stamens numerous. Style filiform, 
multifid at the apex. Berry scaly from the permanent remains 
of the sepals. Cotyledons wanting ?—Simple, grotesque, fleshy, 
ovate or globose, ribbed, leafless shrubs, with the habit of Melo- 
cactus; ribs as if they were formed from confluent tubercles, 
bearing on their back fascicles of prickles. The woolly head or 
spadix, which is present in Melocáctus is wanting in this genus. 
Flowers rising from the fascicles of spines at the tops of the ribs 
very like those of the genus Céreus, but the tube is almost 
wanting. 
1 E. crpzo'sus (D. C. prod. 3. p. 461.) plant ovate or nearly 
oblong, obtuse; ribs interrupted by tubercles; some of the 
tubercles rather tomentose at the apex, and tipped with fas- 
cicles of stiff straight needle-formed prickles ; others in the 
outer series naked, elongated, and mammeeform, and a little com- 
pressed. kh. D. S. Native of Jamaica. Cáctus gibbdsus, 
Haw. syn. p. 173. bot. reg. 137. Plant nearly like that of 
Mammillaria tuberculòsa, but is not lactescent? Flowers 2, 
larger than any other of the genus, quite at the apex of the plant, 
which is depressed. The tube of the flower is greenish, and 
the sepals distant, with a white expanded limb: lobes obovate, 
rather mucronate, disposed in 4 series. Genitals yellow. 
Gibbous Hedgehog-thistle. Fl. July, Aug. Clt. 1808. PI, 
4 foot. 
2 E. susersposus (Haw. in phil. mag. Oct. 1831. p. 418.) 
plant roundish-oblong, very spiny, with the spines interwoven ; 
angles or ribs about 16 in number, and are, as well as the re- 
cesses, profound and acute ; fascicles of spines distant. h . D. S. 
Native near Valparaiso. Plant 5 inches high, and 3 inches 
broad, woolly at the base of the fascicles of spines. Spines 
straight, 12-13 in each fascicle: the lower ones of these are 
whitish or pale, bristle-formed, nearly half an inch long, hori- 
zontal: the 6 upper ones prickle-formed, much larger, nearly ar 
inch long, bulbous, and yellowish at the base, and rufescent at 
the apex ; the middle spine of the ultimate fascicles compared 
with the rest is straight. 
Sub-gibbous Hedgehog-thistle. Clt. 1830. Pl. 4 foot. 
3 E. no’s1tis (Haw. in phil. mag. Feb. 1830. p. 114.) plant 
erect, oblong: with many ribs, beset with numerous, strong, 
straight, black fascicles of spines. h. D. S. Native of Mexico. 
Cactus nóbilis, Haw. syn. p. 174. but not of others. Cactus 
redictus, Link, enum. 2. p. 21. Céreus redúctus, D. C. prod. 
3. p- 463. Plant 3 feet high. Fascicles of spines interwoven, 
imbricating. 
Noble Hedgehog-thistle. Clt.1796. Shrub 3 feet. 
4 E. corniGerus (D. C. diss. t. 7.) plant subglobose, very 
obtuse; ribs almost vertical, interrupted by tubercles, some- 
what depressed: all prickly at the top; prickles unequal, 
straight, and needle-shaped : the lower one broad, thick, and a 
little recurved at the apex. kh. D. S. Native of Mexico. 
