MAMMILLARIA 



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

 tal or deflexed: fls. 1 in. iu diam., pale purple: fr. M in. 

 long, "red, witli a conical cap formed of the withered re- 

 mains of the flower: seeds brown. Tex. 



23. corntita, Hildra. Depressed-globose or hemispher- 

 ical, small, grayish green: tubercles large, flattened and 

 imbricated; areolie round : radial spines 5-7, stout, short, 

 compressed, radiant, grayish, tlie upper longer; rentral 

 1, stouter, as long as the radials: Us. roso-rc'd. "Iu age 

 the spines fall oft and the plant, covered witli imbri- 

 cated, scale-like tubercles, reminds one of a pineapple." 

 Mexico. 



. S^^^ -7= 



MAMMILLARIA 



975 



1356. Mammillaria vivipara ( 



24. elephintidena, Lem. Rather large, glaucous 

 green: tubercles very large and thick, becoming hori- 

 zontal or deflexed and somewhat bilobed: spines 6-8, all 

 radi J, stout, yellowish or gray, appressed to the plant 

 and somewhat recurved: fls. rose-color, 3 in. iu expan- 

 sion. Mexico. 



23. langrim&mma, DC. Cespitose, bright green, form 

 ing large, low clumps: tubercles sometimes more than 2 

 inches long: spines straight, pubescent; radials 7-10; 

 central 1: fls. 2 in. or more in expansion. Mexico. 



Var. uberif6rmis, Schum. Tubercles darker green: 

 radial spines seldom more than 4; centrals none. 



Var. globdsa, Schum. Tubercles dark green, very 

 long; radial spines as many as 12; centrals 2-3. 



Var. sphaerica, Engelra. Tubercles about 1 in. long, 

 radial spines 12-14; central 1. Tex. 



20. Koseana, Brandg. (3/. if(t(i(idna,Quehl.). Upright 

 brandies \-\M ft. long, VA-'i in. in diam.: tubercles 

 rather remote, flattened and appressed, later spreading: 

 radial spines 8; central 1, brownish, 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 tu- 

 bercles. 



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

 long, 2-t in. 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, lJ^-2 iu. long, 2 or 3 

 times as long as the radials : f r. red, much exceeding the 

 tubercles. 



28. Pdudii, Greene. Upright branches 10-15 in. long, 

 1^2-2 in. in diam., making much smaller clumps than the 

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

 setose: spines in three 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 

 exceeding the other spines: fr. oval or obovate, dull 

 purplish red, % in. long. 



29. Hilei, Brandg. Upright branches \M-1 ft. high, 

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

 ical from a broad base: spines sub-3-serrate, outer 

 15-23; 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, 



30. elongata, DC. (M. dlasa. Link & Otto). Erect, 

 C-7 in. long, 1-1!^ in. thick: radial spines 16-18, yellow; 

 centrals none: fls. white or yellowish. Central Mex. 



Var. echinita, Schum. (M. eehin&la and M. ecliinaria, 

 DC.). Radials as many as 20, yellow; centrals 2-3, 

 brown. — A stout form. 



Var. tenuis, Schum. (31. Unitis, DC. 3f. minima, 

 Salm.) Radial spines about 20, pale yellow; centrals 

 none— The most slender form, only % in. thick. 



Var. steila-aurita, Schum. Stems somewhat thicker: 

 spines golden yellow; 1 central usually present. 



31. Ledna, Pos. Stems stouter, glaucous, upper axils 

 woolly: radial spines about 30, radiant, slender, white; 

 centrals 6-12, much stouter; the upper ones longest, 

 ivory white at base, dove-color or bluish above. Nuevo 

 Leon, Mex. 



32. decipiens, Scheidw. {M. Ouilleminicina, Lem.). 

 Irregularly cespitose, somewhat olavate, often rosy: 

 tubercles cylindrical; axils sparingly bristly: radial 

 spines 7-12, whitish; centrals 1-2, brown, longer; all 

 slender. Mex. 



33. frdgiliSi Salm. Stems low, iisually as broad or 

 broader than high, extremely proliferous, the offsets so 

 lightly attached that they soon fall by their own weight: 

 radial spines 12-14, white; centrals none or 1, rarely 2, 

 white, with dusky tip. Mex. 



34. laslacintha, Engelm. Low, usually globose or 

 depressed-globose : tubercles slender, axils naked : 

 radial spines as many as 40-80, feathery; centrals none. 

 Tex. 



Var. denuditta, Engelm. (M. liungei, Hort.). Larger, 

 both plant and tubercles : spines naked. Cact. 



35. plumdsa, Web. Densely cespitose, at length form- 

 ing masses 6-10 in. in diameter; axils long-hairy: radical 

 spines about 40, feathered to the tip; centrals none.— 

 This and the preceding are like feathery balls. M. ptu- 

 mosa Is sold usually under the name of 31. lasiaeantha, 

 to which it appears to be rather closely related. North 

 Mex. 



36. senilis, Salm. "Proliferous at base: axils not se- 

 tose: tubercles crowded : spines all white; exterior very 

 Bumerous, erect-spreading, hair-like, flexuous ; centrals 

 4-6, a little stronger, the upper and lower hooked." 

 Chihuahua, Mex. 



37. barbita, Engelm. Globose-depressed: axils not 

 setose: exterior spines very numerous, pilose; interior 

 stronger, yellowish, 10-15; central solitary, stout-hooked, 

 yellowish, not much longer than the others: fls. small, 

 not remote from the center; sepals fimbriate: berry 

 "green." Near Chihuahua, Mex. 



38. v6tula, Mart. Subglobose or becoming subcylindri- 

 cal: axils not setose: radial spines bristle-like, at first 

 25-30, obliquely spreading, later twice as many and 

 horizontal ; centrals 1-3, yellowish brown, scarcely 

 stouter or longer. Mex. 



39. cindida, S 

 length cespitose 

 pressed: axils s.Ims, : la^lial spines bristle-like, more 

 than 50, horizciiitil .iimI ininwoven; inner spines 8, 10, 

 12. or more, a littli' st<iiii(r :iih1 upright: fls. flesh-color 



40. puslUa, DC. {Ciirtiis .si, ll,)his. Willd. 3f.steUdris, 

 Haw.). Low, globul:ir. pinlilnous, making large 

 masses: tubercles cYli.i.lri.iil. siiiiillaiiil loo.sely spread- 

 ing; axils with long. iKiir Ilk, •. li.riuous bristles: radial 

 spines 12-20, very soft ;ui.l iI.auous; centrals 4-6, yel- 

 lowish, a little rigid, pul.rs.-.nt: lis. yellowish white. 

 W. Indies. 



Var. multioeps, Salm. Larger: tubercles upright, 

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

 pubescent, reddish yellow. Mex. 



