STANDLEY TREES AND SHRUBS OF MEXICO. 993 



56. Neomammillaria haageana (Pfeiff.) Britt. & Rose, Cactaceae 4: 110. 1923 

 Mammillaria haageana Pfeiif. Allg. Gartenz. 4: 257. 1S36. 



Mexico, the range not known. 



Somewhat ce.spitose, the individual plants globose or somewhat elongate 

 in age; axils slightly woolly; radal spines about 20, radiating, white, cen- 

 tral spines 2, a little longer than the radials, black; flowers small, carmine- 

 rose. 



57. Neomammillaria perbella (Plildm.) Britt. & Rose, Cactaceae 4: 111. 1923. 

 ilammiUaha perbella Hildm. ; Schum. Gesamtb. Kakt. 567. 1898. 



Mexico, the range not known. 



Solitary or somewhat cespitose, depressed-globose, glaucous-green ; tubercles 

 short-conic, their axils lanate ; radial spines 14 to 18, 1 to 1.5 mm. long, 

 setaceous, white ; central spines 2, very short (4 to 6 mm. long) ; flowers 9 

 to 10 mm. long, reddisli. 



58. Neomammillaria collina (Purpus) Britt. & Rose, Cactaceae 4: 111. 1923. 

 MammiUaria collina Purpus, Monatsschr. Kakteenk. 22: 162. 1912. 

 Puebla, the type from Esperanzn. 



Simple, globose, 12 to 13 cm. in diameter, somewhat depressed at apex ; 

 tubercles cylindr'c, 1 cm. long or less, woolly in their axils ; radial spinr-s 

 16 to 18, white, 4 mm. long ; central spines 1 to 2, longer than the radials ; 

 flowers rose-colored, 1.5 to 2 cm. long; fruit 2 cm. long, red, 



59. Neomaminillaria donatii (Berge) Britt. & Rose. Cactaceae 4: 111. 1923 

 MammiUaria donatii Berge; Schum. Gesamtb. Kakt. Nachtr. 135. 1903. 

 Mexico, the range not known. 



Usually simple, .stout and globose but sometimes branching, glaucous- 

 green ; tubercles small, conic, naked in their axils ; radial spines 16 to 18, 

 S mm. long, glossy; central spines 2, yellowish black, 10 mm. long; flowers 

 reddish, 15 mm. long. , 



60. Neomammillaria mundtii (Schum.) Britt. & Rose, Cactaceae 4: 112. 1923. 

 MdiiniiiUari't nnnidtii Schum. Monatsschr. Kakteenk. 13: 141. 1903. 

 Mexico, the range not known. 



Solitary, so far as known, globose, 6 to 7 cm. in diameter ; tubercles not 

 milky, nearly terete, dark green, rather short and stubby, naked in their 

 axils ; spine areoles circular, somewhat lanate when young ; radial spines S 

 to 19. swollen at base, si^reading or somewhat curved backward. 6 to 8 nun. 

 long, brownisli when young, the tips usually darker ; central spines 2, a little 

 stouter and longer than the radials, porrect ; flower from near the center 

 of the plant, 2 cm. long. 



61. Neomammillaria celsiana (Lem.) Britt. & Rose, Cactaceae 4: 112. 1923. 

 Mammillaria celsiana Lem. Cact. Hort. Monv. 41. 1839. 



Mam,millaria muehlenpfordtii Forst. Allg. Gartenz. 15: 49. 1847. 



Mammillaria schaeferi Fennel, Allg. Gartenz. 15: 66. 1847. 



IMammillaria perrinoii Hildmann, Gartenwelt 10: 2.j0. 1906. 



Oaxaca and elsewhere in southei'n Mexico. 



Plant body subglobose, becoming columnar, 10 to 12.5 cm. high, 7.5 cm. in 

 diameter, deep green ; axils of tubercles woolly ; tubercles conic, compact ; 

 spine areoles small, round, woolly when young ; radial spines 24 to 26, about 

 equal, white, setaceous ; central spines 4 to 6, rarely 7, somewhat longer than 

 the radials, terete, rigid, pale yellow, more or less recurved and unequal, 8 to 

 16 mm. long ; flowers red ; fruit described as green. 



