STANDLEY TREES AND SHRUBS OF MEXICO. 999 



84. Neomammillaria decipiens (Scheidw.) Britt. & Rose, Cactaceae 4: 

 131. 1923. 



Mammillaria decipiens Scheidw. Bull. Acad. Brux. 5: 496. 1838. 



Mammillaria anancistria Lem. Cact. Hort. Monv. 39. 1839. 



Mammillaria guilleminiana Lem. Cact. Hort. Monv. 48. 1839. 



San Luis Potosi. 



Usually cespitose, deep green; tubercles soft, cylindric, about 1 cm. long, 

 their axils bearing 2 or 3 bristles each ; radial spines 7 to 9, spreading, slender, 

 white, sometimes yellowish with brown tips, puberuleut when young; cen- 

 tral spine 1, much longer than the radials, erect or ascending, 15 to 18 mm. 

 long, dark brown ; flower 15 mm. long, broadly funnel-shaped ; inner perianth 

 segments nearly white or faintly tinged with pink, acute. 



85. Neomammillaria discolor (Haw.) Britt. & Rose, Cactaceae 4: 132. 1923. 

 Mammillaria discolor Haw. Syn. PI. Succ. 177. 1812. 



Cactus depressus DC. Cact. Hort. Monsp. 84. 1813. Not C. depressus Haw. 

 1812. 



Cactus pseudomammillaris Salm-Dyck, Liste PI. 1: 1. 1815. 



Cactus spini Colla, Mem. Accad. Sci. Torino 33: 133. 1826. 



MammiUaria albida Haage; Pfeiff. Enum. Cact. 28. 1837. 



Mammillaria aciculata Otto; Pfeiff. Enum. Cact. 29. 1837. 



1 Mammillaria curvispina Otto; Dietr. AUg. Gartenz. 14: 204. 1846. 



Mammillaria nitens Otto; Linke, Allg. Gartenz. 16: 331. 1848. 



Mammillaria pulchella Otto; Linke, Allg. Gartenz. 16: 331. 1848. 



Puebla. 



Globose or somewhat depressed, often solitary, about 7 cm. in diameter ; 

 tubercles ovoid-conic, arranged in 13 to 15 spirals, their axils naked ; radial 

 spines 16 to 20, white, setaceous, widely spreading; central spines about 6. 

 stouter than the radials, straight, at first black with white bases ; flowers 15 

 mm. broad when fully open ; inner perianth segments linear, white, with violet- 

 rose band ; fruit red, 2.5 cm. long. 



86. Neomammillaria fragilis (Salm-Dyck) Britt. & Rose, Cactaceae 4: 133. 

 1923. 



Mammillaria fragilis Salm-Dyck, Cact. Hort. Dyck. 1849. 103. 1850. 



Mexico, the range not known. 



Stems usually oblong or club-shaped, sprouting freely toward the top; 

 branches globose and breaking off at the slighest touch ; tubercles bright green, 

 terete, their axils nearly naked ; radial spines 12 to 14, white, naked, spread- 

 ing; central spines usually wanting, especially on branches, if present 1 or 2, 

 elongate, erect, brownish especially at tip; young spine areoles with white 

 wool; flowers from the upper part of plant but not from the center, small, 

 lasting for several days, cream-colored, the outer segments somewhat pinkish ; 

 petals broad, with mucronate tip. 



87. Neomammillaria elongata (DC.) Britt. & Rose, Cactaceae 4: 134. 1923. 

 Mammillaria elongata DC. Mem. Mus. Hist. Nat. 17: 109. 1828. 

 Mammillaria subcrocea DC. Mem. Mus. Hist. Nat. 17: 110. 1828. 

 Mammillaria intertexta DC. Mem. Mus. Hist. Nat. 17: 110. 1828. 

 Mammillaria tenuis DC. Mem. Mus. Hist. Nat. 17: 110. 1828. 

 Ulammillaria densa Link & Otto, Icon. PI. Rar. 69. 1830. 



Mammillaria stella-avrata Mart.; Zucc. Abb. Akad. Wiss. Miinchen 2: 101. 



1837. 

 IMammillaria anguinea Otto; Salm-Dyck, Cact. Hort. Dyck. 1849. 101. 1850. 



