976 



MAMMILLARIA 



Var. Texana, Engelm. Larger than the last: spines 

 in 3 series; outer capillary, crisped, 30-50; interior 

 10-12, a little more rigid, pubescent, white; centrals 

 5-8, longer, stouter, pubescent, yellow at tip. Tex. and 

 adjacent Mex. Cact. 



41. Bocasana, Pos. Depressed-globose, or a little 

 lengthened, at length densely cespitose: axillary 

 bristles as long or longer than the tubercles: radial 

 spines 25-30, white, stiff at the base, ending in a flex- 

 uous thread; centrals 2-3, slender, porrect, short, all 

 yellow with brown tips, the hooked one brown nearly to 

 the base, pubescent. Mex. 



42. Wildii, Dietr. (M. Wilditina, Otto). Cespitose, 

 forming hemispherical clumps : radial spines 8-10, very 

 slender, white, spreading; centrals usually 3-4, a little 

 stouter and longer, honey-yellow, brown at base, pubes- 

 cent, 1-hooked. Mex. 



43. tetrancfstra, Engelm. (M.phellosptrma, Engelm. ) . 

 Ovate or ovate-cylindrical, rather large, simple or 

 sparingly branched from the base: young axils spar- 

 ingly setose: radial spines 30-60, in two series; exte- 

 rior bristle-like, white; interior stouter and longer, 

 dusky-tipped or purplish; centrals 1-4, longer, brown 

 or blackish, sometimes all hooked, the upper ones some- 

 times straight : seed partly immersed in a brown 

 corky cup. S. Calif, to Utah. Cact. 



44. didica, Brandg. (M. Goddrichii, of California). 

 Simple or cespitose from the base, ovate to cylindrical, 

 3-8 in. high : tubercles somewhat angular and leathery : 

 radial spines 11-22, white, with brown or purple tips; 

 centrals 1-4, longer and darker, the upper turned up 

 among the radials, the lower porrect and strongly 

 hooked : fls. often unisexual, yellowish white with rosy 

 streak. Calif, and Lower Calif. 



Var. insularis, Brandg. (M. Pdlmeri, Coult., not of 

 Jac.). Stems densely cespitose, shorter: axils densely 

 woolly: spines much whiter, usually all straight. San 

 Benito Island. 



45. armillata, Brandg. Taller, often 1 ft. in height, 

 branching at base and along the stem: tubercles 

 crowded: radial spines 9-15; centrals 1-4, nearly twice 

 as long: fls. small, yellowish, scarcely spreading. Lower 

 Calif. The plant is marked by darker circular bands. 



46. Wrightii, Engelm. Globose or depressed, top- 

 shaped below: radial spines 8-12, white, pubescent; cen- 

 trals 1-3, reddish black, scarcely longer than radials, all 

 hooked; fls. about 1 in. long, purple. New Mexico. 



47. Goddrichii, Scheer. Erect, cylindrical, branching 

 at base; axils naked : radial spines about 12, white; cen- 

 trals 4, white below, brown above, the 3 upper erect- 

 spreading, the lower longer. Cedros Island and Lower 

 California. 



48. Grahami, Engelm. Globose or ovate, somewhat 

 cespitose: radial spines 15-30, white, often dusky at tip, 

 the upper ones shorter ; centrals usually 4, usually 

 blackish from a paler base, the 3 upper turned up among 

 the radials, and, when pale, hardly to be distinguished 

 from them; lower porrect: fls. rose-colored, 1 in. in 

 expansion: fr. nearly 1 in. long. From Texas to S. Cali- 

 fornia and adjacent Mexico. 



49. venusta, Brandg. Globose or hemispherical, small, 

 often cespitose : tubercles very thick and blunt, concave 

 at the end, usually extremely glaucous : radial spines 

 9-15, stout, from pure white to white below and brown- 

 ish above; central commonly 1, sometimes 2 or 3, the 

 lower little longer and darker than the radials : fls. rose- 

 color, 1% in. in expansion : fr. scarcely juicy, nearly 

 1 in. long, circumscissile near the base. So. Lower 

 California. 



50. Mainae, Brandg. Hemispherical to ovate, usually 

 simple : tubercles somewhat incurved, glaucous, the 

 lower part and the axils often bright rose-red : radial 

 spines 10-15, yellowish becoming gray, the upper 

 shorter; centrals 1-3, the upper shorter and smaller, 

 turned upward, one of them sometimes hooked, lower 

 central stout, strongly hooked, somewhat twisted, yel- 

 lowish below, black at tip: fls. flesh-color: fr. shorter 

 than the tubercles. Vicinity of Nogales, Arizona. Sent 

 out as M. Galeottii. 



MAMMILLARIA 



51. Carretti, Schum. Simple, depressed-globose, rather 

 small: radial spines spreading-recurved and interwoven, i 

 rather long, yellowish ; central 1, slender, chestnut- \ 

 brown, paler below : fl. whitish, with rosy streak in j 

 petals; sepals long-acuminate. Mex. The only speci- 1 

 men seen has bristles in the axils. 



52. eriacantha, Link and Otto. Cylindrical, elongated, ; 

 % ft. and more in height ("reaching 20 inches") by 2-2 K i 

 in. in diam. : tubercles crowded, acutely conical : spines 

 all pubescent; radials 20-24, pale yellow, bristle-like;; 

 centrals 2, stronger, nearly twice as long as the radials, \ 

 golden yellow, one directed, the other downwards : fls. i 

 yellow, small: fr. yellow. Mex. 



53. sphacel&ta. Stems cespitose, cylindrical, 6 in. or 

 more long,' 1 in. in diam. : tubercles short, conical from 

 a broader, rhombic base : spines ivory white with black- 

 ish tips ; radials 12-18, horizontal-spreading ; centrals 

 3-4, upright : fls. small, the petals acute. Mex. The 

 proper position of this and of the preceding species is 

 still quite uncertain. 



54. spinosissima, Lem. Stems cylindrical, reaching 

 1 ft. in height and 2>a in. in diam.: tubercles short, 

 ovate-conic, somewhat tetragonal: radial spines 20-25, 

 setiform, white, spreading; centrals 12-15, brownish red, 

 stronger and twice the length of the radials. Mex. 



Var. sangufnea, Hge. Stem somewhat clavate, rather 

 shorter and stouter: radial spines 18-20, spreading, 

 white ; centrals 8, only a little longer, but thicker and 

 bulbous at base, white with brownish base and dark 

 brown tip, the young ones dark blood-red. Mex. 



55. rhodantha, Link and Otto (M. Odieridna, Lem. 

 M. fulvisplna, Haw.). Stem long-cylindric or clavate, 

 reaching more than 1 ft. in height, usually 2-parted: 

 axils bristly: radial spines 16-20, white, bristle-like, i 

 horizontal-spreading ; centrals 4-6, rigid, white or yel-j 

 lowish, the upper black at tip. Mex. 



Var. pyramidalis, Schum. Central spines dark brown,' 

 the young ones ruby red. 



Var. Pfeifferi, Schum. (M. aureiceps, Lem.). Radial 

 spines 25 or more, yellow; centrals 6-7, recurved spread- 

 ing, golden brown. 



Var. crassisplna, Schum. Radial spines 24-27, whit- 

 ish : centrals 6-7, larger and stouter, more curved 

 darker. 



Var. fuscata, Schum. Axils naked; tubercles 4-angu- 

 lar at base: radial spines 25-28, radiant, bright yellow 

 ish brown: centrals 6, stout, strongly curved, the uppei 

 very long. 



56. dolichoc6ntra, Lem. (M . tetracdntJia, Hook. ) . Sub 

 globose (but said to reach a yard in height): tubercles 

 somewhat 4-angled ; areolaB elliptic or rhombic : radia 

 spines none; centrals 4, slender, rigid, the upper curvec 

 upward, 1-1% in. long, the three lower half as long, al i 

 grayish brown. Mex. 



Var. Gale6ttii, Forst. Radial bristles 8-14, very short 

 soon falling; centrals 4, seldom 1 or 2 more, spreading 

 yellowish, with points, the upper and lower longest, 

 Mex. 



57. discolor, Haw. Globose or ovate, glaucous : outei 

 spines 16-20, white, radiant; interior 6, rigid, recurved; 

 white below, black above, upper and lowermost verj 

 long. Mex. 



58. Lesaunieri, Schum. Hemispherical or very short 

 cylindrical (habit of M. Heyderi)'. spines brownish 

 short; radials 11-13; central upright, stronger. 



59. Haageana, Pfr. Cespitose: heads small, at lengtl 

 cylindrical, slender: tubercles small, crowded ; axils 

 woolly: radial spines about 20, pure white, only abou 

 1% lines long; centrals 2, black, slender, elongated 

 upper 3, lower 4 lines long. Mex. 



60. elegans, DC. (M. acanthophUgma, Lehm. M. Po 

 toslna,Hort. M. Klugii, Ehrh.). Simple, then prolif 

 erous and densely cespitose, depressed-globose, late: 

 lengthened : tubercles crowded", very small : radia 

 spines more than 20, bristle-like, about 3 lines long 

 pure white, interwoven and covering the whole plant 

 central spines 2(1-3), with brown tips, the one directec 

 upward, the other downward, about twice as long ai 

 radials, in the axils abundant long white wool. Mex. 



