1980 



MAMMILLARIA 



MAMMILLARIA 



Var. multiceps, Salm. Larger: tubercles upright, 

 crowded: radial spines -numerous; centrals 6-8, slender, 

 pubescent, reddish yellow. Mex. 



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. Texas and 

 adjacent Mex. 



46. Bocasana, Poselg. 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, each ending in a 

 flexuous thread; centrals 2-3, slender, porrect, short, 

 all yellow with brown tips, the hooked one brown nearly 

 to the base, pubescent. Mex. 



47. Kunzeana, Bodeker & Quehl. Plants small, 

 growing in cespitose clusters, light green: tubercles 

 cylindrical, with bristles in their axils: radial spines 

 about 25, white, delicate but stiff; central spines 3 or 

 4, yellowish brown, one of them hooked: fls. white, 

 with the outer lobes rose-colored. Mex. 



48. Wildii, A. Dietr. (M. Wildiana. 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. 



49. dioica, Brandeg. (M.Gobdrichii, of 'Calif.). 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 Low. Calif. 



Var. insularis, Brandeg. (M . Pdlmeri, Coulter, not of 

 Jacobi). Sts. densely cespitose, shorter: axils densely 

 woolly: spines much whiter, usually all straight. San 

 Benito Isl. 



50. armillata, Brandeg. Taller, often 1 ft. high, 

 branching at base and along the st.: tubercles crowded: 

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

 fls. small, yellowish, scarcely spreading. Low. Calif. 

 The plant is marked by dark circular bands. 



51. 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 Mex. 



52. 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 Isl. and Low. Calif. 



53. Grahamii, 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. ex- 

 pansion: fr. nearly 1 in. long. From Texas to S. Calif, 

 and adjacent Mex. 



54. fasciculata, Engelm. (M. Thornberi, Orcutt). 

 Plants sometimes growing in large clusters often con- 

 taining many plants (as many as 110 have been noted) : 

 sts. cylindrical, usually 2-4 in. high but sometimes as 

 much as 1 ft. high: radial spines 13-18, white, with dark 

 tips : fls. broadly funnel-shaped, purplish ; petals broad- 

 acute. Ariz. This species, although collected in 1848, 

 has been poorly represented in our collections and un- 

 fortunately has recently been re-named. It is a very 

 beautiful species. 



55. mazatlanensis, Schum. (M. littoralis, Brandeg.). 

 Plants growing in dense clusters, much branched at 

 base: sts. globular to short cylindrical: spines nu- 

 merous, usually brown and completely hiding the plant. 



West coast of Mex.; sometimes erroneously referred to 

 Calif. This species does not do well in cult. 



56. ven&sta, Brandeg. 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 

 brownish above; central commonly 1, sometimes 2 or 3, 

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

 rose-color, 1J^ in. in expansion: fr. scarcely juicy, nearly 

 1 in. long, circumscissile near the base. S. Low. Calif. 



57. Mains, Brandeg. Hemispherical to ovate, usu- 

 ally 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, Ariz. Sent out 

 as M. Galeottii. 



58. Carretii, Schum. Simple, depressed - globose, 

 rather small : radial spines spreading-recurved and inter- 

 woven, rather long, yellowish; central 1, slender, chest- 

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

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

 men seen has bristles in the axils. 



59. eriacantha, Link & Otto. Cylindrical, elongated, 

 J^ft. and more in height ("reaching 20 in.") by 2-2 % 

 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 upward, the other down- 

 ward: fls. yellow, small: fr. yellow. Mex. 



60. sphacelata, Mart. Sts. cespitose, cylindrical, 6 in. 

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

 broader, rhombic base : spines ivory-white with blackish 

 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. 



DD. Seeds brown. 

 E. The tubercles not exuding milk when pricked. 



61. spinosissima, Lem. Sts. cylindrical, reaching 

 1 ft. high and 2^ 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. sanguinea, Haage. St. 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. 



62. rhodantha, Link & Otto (M. Odieriana, Lem. 

 M. fulvisjnna, Haw.). St. long-cylindric or clavate, 

 reaching more than 1 ft. high, usually 2-parted: axils 

 bristly: radial spines 16-20, white, bristle-like, horizon- 

 tal-spreading; centrals 4-6, rigid, white or yellowish, 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. crassispina, Schum. Radial spines 24-27, 

 whitish; centrals 6-7, larger and stouter, more curved, 

 darker. 



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

 at base: radial spines 25-28, radiant, bright yellowish 

 brown; centrals 6, stout, strongly curved, the upper 

 very long. 



63. dolichocentra, Lem. (M. telracdntha, Hook.). 

 Subglobose (but said to reach a yard in height) : tuber- 



