STANDLEY TKEES AND SHEUBS OF MEXICO. 1005 



113. Neomammillaria glochidiata (Mart.) Britt. & Rose, Cactaceae 4: 149. 

 1923. 



Mammillaria glochidiata Mart. Nov. Act. Nat. Cur. 16: 337. 1832. 



IMammillaria ancistroides Lelim. Del. Sem. Hort. Hamb. 1832. 



Southern Mexico. 



Densely cespitose, forming clusters sometimes 15 cm. high ; tubercles cylin- 

 dric, green, shining, 8 to 15 mm. long, well separated from one another to- 

 ward the tip, obtuse, terete ; radial spines 12 to 15, widely spreading, puberu- 

 lent, white, setiform, 10 to 12 mm. long ; central spines 4, brownish, one of 

 them hooked ; floAvers white ; inner perianth segments lanceolate, acuminate ; 

 fruit clavate, scarlet, 16 mm. long; seeds black. 



114. Neomammillaria trichacantha (Schum.) Britt. & Rose, Cactaceae 4: 

 151. 1923. 



Mainviillaria trtchacantha Schum. Gesamtb. Kakt. Nachtr. 133. 1903. 



Mexico, the range not known. 



Solitary, globose to short-cylindric, small ; tubercles clavate, 4 to 5 cm. high, 

 slightly glaucous ; radial spines 15 to IS, pubescent, acicular, white, 8 mm. long ; 

 central spines 2, brownish, 12 mm. long, one of them hooked ; flowers red or 

 yellow, 1.5 cm. long ; inner perianth segments lanceolate, widely spreading, 

 acuminate. 



115. Neomammillaria painteri (Rose) Britt. & Rose, Cactaceae 4: 151. 1923. 

 Mammillaria painteri Rose; Quehl, Monatsschr. Kakteenk. 27: 22. 1917. 

 Mammillaria erytlirosperma Bodeker, Monatsschr. Kakteenk. 28: 101. 1918. 

 Central Mexico, the type from San Juan del Rio, Queretaro. 



Plant globose, 2 cm. in diameter, almost hidden by the spines ; tubercles 

 without bristles in their axils ; radial spines about 20, stiff, white, puberulent 

 under a hand lens ; central spines 4 or 5, ascending, dark brown, one hooked, 

 puberulent ; flowers 15 mm. long, greenish white, the outer segments brownish ; 

 inner perianth segments broad, with an ovate acute tip. 



116. Neom^amm^illaria mainae (K. Brandeg.) Britt. & Rose, Cactaceae 4: 154. 

 1923. 



Mammillaria mainae K. Brandeg. Zoe 5: 31. 1900. 



Northern Sonora ; type collected south of Nogales. 



Globose or somewhat depressed, 5 to 8 cm. broad ; tubercles pale green, 

 naked in their axils ; spines all puberulent, at least when young ; radial spines 

 about 10, widely spreading, yellowish or white except the brownish tips; cen- 

 tral spines usually stout, yellowish except the strongly hooked tip; flowers 

 from the upper part of the plant but in the old axils, about 2 cm. long, the 

 outer segments with a brownish stripe, the inner ones with a reddish central 

 stripe, with broad, nearly white margins, acute ; fruit red, globose to obovate, 

 not projecting beyond the tubercles ; seeds dull black, 1 mm. long, punctate. 



117. Neomammillaria boedekeriana (Quehl) Britt. & Rose, Cactaceae 4: 154. 

 1923. 



Mammillaria ioedekeriana Quehl, Monatsschr. Kakteenk. 20: 108. 1910. 



Mexico, the range not known. 



Globose to ovoid, but in collections becoming cylindric, dull green ; tubercles 

 cylindric ; radial spines about 20, white ; central spines 3, brownish black, one 

 hooked ; axils naked ; flowers white, with brownish stripes. 



79688—24 11 



