162 



CACTEvE. III. ECHINOCACTUS. 



Cactus latispmus, Haw. in phil. mag. vol. 63. p. 41. Echinocactus 

 platycanthus, Link et Otto, diss. p. 14. t. 14. without a flower. 

 Cactus cornigerus, Moc. et Sesse, fl. mex. icon. ined. Flowers 

 2-3 at the top of the plant ex fl. mex. an inch long, with a short 

 thick tube, and brownish imbricating sepals, with a purplish 

 limb ; lobes nearly linear, acute, disposed in one series. 

 Horn-bearing Hedgehog-thistle. Clt. 1823. PI. foot. 



5 E. CRISPA'TUS (D. C. diss. t. 8.) plant obovate, retuse at 

 the apex, and rather umbilicate ; ribs numerous, from 30 to 60, 

 nearly vertical, undulately curled, and tubercular ; prickles in 

 fascicles, unequal, straightish. Jj . D. S. Native of Mexico. 

 Cactus crispatus, Moc. et Sesse, fl. mex. icon. ined. Flowers 

 smaller than any other of the genus, at the top of the plant, 

 purple ; sepals densely imbricated along the tube, oblong-linear, 

 acute, disposed in 2 series in the limb. 



Var. j3, fi6rridus(D. C. mem. cact. in mem. mus. 17. p. 115.) 

 fascicles of spines approximate ; prickles stronger, more erect 

 and longer, of a greyish brown-colour. 



Curled Hedgehog-thistle. PI. -| foot. 



6 E. ORNA'TUS (D. C. mem. cact. in mem. mus. vol. 17. p. 

 114.) plant nearly globose: with 8 deep compressed vertical ribs, 

 ornamented with transverse rows of flocky down, with 3 fascicles 

 on each rib ; prickles 7 in a fascicle, straight, yellow, and one 

 central. Jj . D. S. Native of Mexico. Coulter, no. 40. Plant 

 5 inches in diameter. Prickles 8-10 lines long. 



Ornamented Hedgehog-thistle. PI. ^ foot. 



7 E. TUBERCULA'TUS (Link et Otto, diss. t. 26.) plant nearly 

 globose, with 8 nearly vertical ribs, and with the recesses nar- 

 row ; crests very obtuse, tubercled at the fascicles, of which there 

 are 8 or 10 on each rib ; areolse when young rather velvety ; 

 prickles 12-13 in each fascicle, gvey, with one central straight 

 strong one, the rest radiating. Fj'. D. S. Native of Mexico. 

 Coulter. Intervals on the ribs between the fascicles of spines 

 8-9 lines. Prickles an inch long. 



Var. j8, spiralis (D. C. 1. c.) ribs twisted spirally to the right. 

 Tj . D. S. Native of Mexico. Coulter. Perhaps merely an 

 older state of the species. 



Tubercled Hedgehog-thistle. PI. J foot. 



8 E. ? CEREIFORMIS (D. C. 1. c. p. 115.) plant nearly cylin- 

 drical, green, with about 13 compressed ribs, with the recesses 

 acute, and the crests bluntish ; prickles 7 radiating, and one cen- 

 tral, in each fascicle, greyish, stiff, slender, with 3 fascicles on 

 each rib. J? . D. S. Native of Mexico. Coulter. Perhaps a 

 species of Cereus. 



Cereus-formed Hedgehog-thistle. PI. j foot. 



9 E. GLAUCE'SCENS (D. C. 1. c.) plant nearly globose, depres- 

 sed, glaucescent, with 11-13 vertical compressed obtuse ribs, 

 with 6 fascicles on each rib ; areolse oval-oblong, when young 

 velvety ; prickles yellow, straight, with 6-7 radiating ones, and 

 one central one in each fascicle. Tj . D. S. Native of Mexico. 

 Coulter. Flowers solitary on the top of each rib, rising in the 

 front of a fascicle. Scales of calyx imbricated, smooth, oval, 

 acuminated, with membranous ciliated margins. Plant 3 inches 

 high, and 5 inches in diameter. Intervals between the fascicles 

 on the ribs half an inch. Prickles an inch long. 



Glaucescent Hedgehog-thistle. PI. -j- foot. 



10 E. COULTE'RI; plant nearly globose, depressed, green, 

 with 13-18 vertical ribs, with both the recesses and ribs acute ; 

 fascicles 3 on each rib ; areolse oval, when young velvety ; 

 prickles yellow, stiff, with 7-8 radiating ones, and one erect cen- 

 tral one, which is nearly twice the length of the others, in each 

 fascicle. Tj . D. S. Native of Mexico. Coulter, no. 43. 

 E. hystrix, D. C. 1. c. but not of Haw. Plant 5-8 inches in 

 diameter, and 3-4 inches high. Prickles an inch long, central 

 ones 2 inches long. Intervals between the fascicles on the ribs 

 12-18 lines in length. 



Coulter's Hedgehog-thistle. PL | foot. 



HE. OBVALLA'TUS (D. C. diss. t. 9.) plant obovate-globose, 

 depressed and umbilicate at the apex ; ribs numerous, vertical ; 

 prickles in fascicles, unequal, divaricate, long ; flower solitary at 

 the top of the plant, surrounded by spines. Tj . D. S. Native 

 of Mexico. Cactus obvallatus, Moc. et Sesse, fl. mex. icon, 

 ined. Tepenexcomitl, Hern. mex. p. 410. with a figure. 

 Spines whitish, needle-shaped, diverging, intricate. Flower 

 erect, purple, with the margins of the lobes of the limb white. 



Environed-fioviered Hedgehog-thistle. PI. ^ foot. 



12 E. TENUISPI'NUS (Link et Otto, diss. p. 12. t. 19. f. 1.) 

 plant nearly globose, umbilicately retuse at the apex ; ribs 12, 

 bluntish ; prickles in fascicles, slender, recurved, 3 or 4 of which 

 are a little larger than the rest ; flowers girded by wool. (7 . 

 D. S. Native of Brazil, in the province of Rio Grande. Plant 

 green, 2 or 3 inches in diameter. Sides of ribs rather impressed. 

 Flowers beyond 2 inches long, yellow ; sepals lanceolate, acute ; 

 petals dilated, obtuse, each mucronated by a red bristle. Style 

 12-15 parted. 



Var. ft, minor (Link et Otto, 1. c. f. 2.) plant smaller ; spines 

 longer and slenderer, and more bent. 



Slender-spined Hedgehog-thistle. PL } foot. 



13 E. MELOCACTIFO'RMIS (D. C. diss. t. 10.) plant roundish- 

 ovate, obtuse ; ribs vertical, about 30 in number ; prickles in 

 fascicles, diverging, unequal ; flowers numerous, in a kind of 

 whorl beneath the apex of the plant. Tj . D. S. Native of 

 Mexico. Cactus multangularis, Moc. et Sesse, fl. mex. icon, 

 ined. but not of Willd. Spines brownish. Flowers whitish. 

 Sepals numerous, purplish on the outside, imbricated, and ad- 

 pressed to the tube ; limb expanded ; lobes oblong, acute, dis- 

 posed in 2 or 3 series. Stigmas long, 8-12, exserted above the 

 stamens. 



Melon-thistle-shaped Hedgehog-thistle. PL -| foot. 



14 E. LANGSDO'RFII (Lehm. ind. sem. hort. hamb. 1826, p. 



17.) plant oblong, with 17 angles; spines slender, stiff, spread- 

 ing ; vertex of plant very villous and spiny, and bearing flowers. 



Tj . D. S. Native of Brazil. Plant green. Fascicles of spines 

 approximating, rising from short wool, central spine in each fas- 

 cicle an inch long, the 6 marginal ones unequal, reflexed, and 

 spreading. Flowers 2-4, terminal, rising from among wool and 

 spines. Calyx tubular. Petals about 20, yellow. Stigma many- 

 parted, radiate, purple. 



Langsdorfs Hedgehog-thistle. Shrub \ foot. 



"(" The flowers of the following species being unknown, some of 

 them are probably referrible to the genus Melocactus. 



15 E. TEPHRACA'NTHUS (Link et Otto, diss. p. 13. t. 14. f. 2 ) 

 plant globose, glaucescent, impressed on the top, not tubercled ; 

 ribs 15, acute; prickles 10 in each fascicle, spreading: the 4 

 central ones the largest, fj . D. S. Native of Brazil, in the 

 province of Rio Grande. The plant is hardly an inch high, and 

 hardly the same in thickness. Prickles canescent, hardly an 

 inch long. Flowers unknown. 



Ash-coloured-spined Hedgehog-thistle. Clt. 1825. PL \ to 

 -\ foot. 



16 E. RECU'RVUS (D. C. prod. 3. p. 462.) plant roundish, with 

 15 angles ; prickles broad, very numerous. Ij . D. S. Native 

 of Mexico. Cactus recurvus, Mill. diet. ed. 8. no. 3. Cactus 

 nobilis, Lin. mant. 243. Willd. spec. 2. p. 939. Cactus multan- 

 gularis, Voigt. ex Steud. Prickles of two forms, outer ones ex- 

 panded, central ones long, brown and recurved at the apex. 



.RecMrued-spined Hedgehog-thistle. Clt. 1796. PL 1 foot. 



17 E. INTO'RTUS (D. C. 1. c.) plant oblong, with 13-16 angles; 

 angles twisted like a spire at the apex ; prickles middle-sized, 

 rather incurved. Tj . D. S. Native of Antigua. Cactus in- 

 tortus, Mill. diet. ed. 8. no. 2. Haw. syn. p. 174. 



