MAMMILLARIA 



MAMMILLARIA 



1977 



micromcris, 33, 

 minima, 34. 

 niissouriensia. 5. 

 multiceps, 45. 

 mutabilis, 75. 

 nco-mcxicana, 2S. 

 Nickelsffi, 25. 

 nivea. 6S. 

 nivosa, 78. 

 nogalensis, 12. 

 NuUallii, 5. 

 Odieriarui, 62. 

 Palmeri, 49. 

 Parkinsonii, 69. 

 pectinata, 22. 

 Pfiersonii, 76. 

 petrophila, 73. 

 Pfeifferi, 62. 

 phtUospcrma, 32. 

 plumosa. 40. 

 Pondii, 3. 

 Poselgeri, 1. 

 Pofosina, 67. 

 pubescent, 6. 

 pusilla, 45. 



INDEX, CONTINUED. 



pyramidalis. 62. 

 radians, 21. 

 railiainli.-isima, 10. 

 radiosa. 2S. 

 liadliana, 1. 

 raphitjacantha, 10. 

 recurvata, 12. 

 rt'Ciirvispina, 12. 

 rhodantha, 62. 

 robust ior, 5. 

 robustispina, 14. 

 Ros€ntta, 1. 

 rufispina, 6. 

 Runi/ci, 39. 

 sanguinea, 61. 

 Scheerii. 13. 

 Schmi'itii, 74. 

 scolymoides, 20. 

 sempervivi, 88. 

 senilis, 41. 

 sctispina, 2. 

 similis, 5. 

 simplex, 77. 

 sphacelata, 60. 

 sphjerica, 31. 



sph^crotricha, 44. 

 spinosissinia, 61, 

 Btrlla-aiirata, 34. 

 sliUnris, 4.5. 

 strnliiliformis, 6, 26. 

 siilxiTiiinlttris, 71. 

 sulcata, 24. 

 tenuis, 34. 

 tetracantha, 63, 74. 

 tetrancistra, 32. 

 toxana, 45. 

 triensis, 82. 

 Thornberi, 54. 

 Trohartii, 87. 

 tuberculosa, 6. 

 uberiformis. 31. 

 uncinata, 86. 

 vcnusta, 56. 

 vetula, 43. 

 viperirta, 34. 

 vivipara, 27. 

 Wiltliaiia. 48. 

 Wildii, 48. 

 WissTnannii, 5. 

 Wrightii, 51. 



A. Stamens and style exsertcd beyond the petals; fis. irreg- 



ular, slender, tubular, somewhat curved atul bila- 

 biate. (Subgenus Cochemiea.) 



1. Poselgeri, Hildmann (.1/. Rosei'ina, Brandeg. M. 

 Radlidna. Quehl.). Upright branches 1-1 J 2 ft- long, 

 1 J 2-3 in. diam. : tubercles rather remote, flattened and 

 appressed, later .spreading: radial spines 8; central 1, 

 browTiish, strongly hooked, 1-2 in. long, twice as long as 

 the radials: fr. bright red, flat on the broad top and 

 much shorter than the tubercles. 



2. setispina, Engelm. Upright branches 8-12 in. 

 long, 2-4 in. diam., forming dense clumps: tubercles 

 rather crowded, ovate, short: spines white with black 

 tips; radials 10-12; centrals 1—4, stouter, the lower one 

 strongly hooked, often twisted, 1)2-2 in. long, 2 or 3 

 times as long as the radials: fr. red, much exceeding the 

 tubercles. Low. Calif. 



3. Pondii, Greene, llpright branches 10-15 in. long, 

 13.^^2 in. diam., making much smaller clumps than the 

 two preceding: tubercles short, ovate, not crowded; axils 

 setose: spines in 3 series, outer 1.5-25, short, white; inner 

 5-8, brown, longer; central row 3, brown, usually 2 of 

 them strongly hooked, 1 in. or more in length, much ex- 

 ceeding the other spines: fr. oval or obovate, dull pur- 

 phsh red, 54'in. long. Calif. 



4. Halei, Brandeg. Upright branches 1 ) 2-2 ft. high, 

 2-3 in. diam.: tubercles rather crowded, short-conical 

 from a broad base: spines sub- to 3-serrate, outer 15-25; 

 centrals 6-9, darker, the lower one much stouter, an 

 inch or more long, usually straight but sometimes 

 hooked, twice as long as the other spines: fr. obovate, 

 red. CaUf. 



AA. Stamens and style shorter than the petals; fls. regular, 

 short, tubular. 



B. Tubercle on old plant with a narrow groove on upper 



side: fls. from the vertex of the plant. 



C. Fr. red; seeds black. 



D. Color of fls. yellow. 



5. missouriensis. Sweet (M. NuttalUi, Engelm.). 

 Nearly simple, 1-2 in. diam. : tubercles cylindric-conical, 

 loose and spreading, slightly grooved: spines white, 

 weak, puberulent, not hiding the bod}'; radials 12-17, 

 spreading; central one longer and stouter, often wanting: 

 fis about 1 in. long, yellow to fawn-color, with reddish 

 streak; sepals fimbriate; petals acute or acuminate: 

 berry red, the shape and size of a small i)ea; seeds black 

 and pitted. Mont, to Kans. and E. Colo. 



\'ar. similis, Engelm. Cespitose, in clumps often a 

 foot broad: spines fewer: fl. and fr. larger. Kansas River 

 to Texas. 



Var. robustior, Engelm. (M. Wissmannii, Hildmann). 

 Almost simple: tubercles longer and looser: spines 



smooth, rather short and stout; radials 10-12; central 

 1 : fls. even larger than in M. similis. Texas. 



DD. Color of fls. rose. 



6. tuberculdsa, lOngelm. (M. ■'ilrobilifdrmis, Scheer). 

 Ovate or cyliiidric, rather slender, somewhat dry of tex- 

 ture, the spines falling from the older tubercles, leaving 

 them iis dry, corky protuberances : tubercles short-ovat e 

 from a broad base; axils densely woolly: radial spines 

 20-30, slender, rigid, white; centrals 5-9, stouter, pur- 

 plish above, the upper longer, erect, the lowest horizon- 

 tal or deflexed : fls. 1 in. diam., pale purple: fr. J^in. long, 

 red, with a conical cap formed of the withered remains 

 of the fl.; .seeds brown. Texas. — Four varieties of M. 

 tuberculosa, vars. ca?spUUia, durispina, pubcscens, and 

 rufispina, which have been distributed in European 

 collections, doubtless belong here. 



7. dasyacantha, Engelm. Simple, subglobose: tu- 

 bercles terete, loose: radial spines 2.5-35, hair-like, 

 white, with brownish ajjex; centrals 7-13, bristle-like, 

 pale below, brown above, longer, the most interior one 

 horizontal, sometimes wanting: seeds black, with nearly 

 basal hilum. Texas. 



cc. Fr. green; seeds brown. 

 D. The tubercles grooved only in upper half. 



8. macromeris, Engelm. Fig. 2314. Low, usually 

 soon proliferous, dark green: tubercles large and long, 

 loose and spreading, but often incurved; groove rather 

 short: radials 10-17, weak, .slender and spreading; cen- 

 trals at maturity usually 4, somewhat stouter and much 

 longer, sometimes more than 2 in. long: fls. purple, often 

 3 in. in ex-pansion; petals erose, mucronate: fr. with 

 several scales on the ovary. Along the Rio Grande from 

 New Mex. to Texas. 



DD. The tubercles grooved from top to bottom. 

 E. Glands t or mare in the axils of the tubercles. 



9. macrothele, Mart. (M. aulacolhcle, Lem. M. Leh- 

 mannii, Otto). Sts. stout, attaining nearly 2 ft, height 





\ 



>^ 







2314. Mammillaria macromeris. ( X Vii 



by 4 in. di.am.: tubercles long, conical, at first upright, 

 in age becoming even deflexed: spines all yellow; radials 

 6-8, spreading; centrals 1-2, longer and stouter: fls. 

 13^2 in. broatl. Cent. Mex. 



10. raphidacantha, Lem. Sts. becoming 1 ft. or more 

 long, 2-3 in. diam., often clavat';: tubercles erect- 

 spreading, somewhat flattened, often with 1 or 2 glands 



