NEOMAMMILLARIA. 



115 



71. Neomammillaria ruestii (Quehl). 



Mammillaria ruestii Quehl, Monatsschr. Kakteenk. 15: 173. 1905. 



Mammiltaria ceisiana guafemalensis Eichlam, Monatsschr. Kakteenk. 19: 59. 1909- 



Cylindric, 6 to 7 cm. high, 4 to 5 cm. in diameter, light green, almost hidden by the spines; 

 axils of tubercles more or less woolly, at least when young; flowering areoles at first quite woolly; 

 radial spines 20 or more, white, glossy, 5 to 6 mm. long, spreading; central spines usually 4, sometimes 

 5, much stouter than the radials, yellow, swollen at base, ascending, 7 to 8 mm. long; flowers small, 

 sometimes almost hidden by the spines, 8 mm. long; inner perianth-segments about 25, lanceolate, 

 acute, pale purple, the margins almost colorless; filaments colorless below, purpHsh above; style 

 pale; stigma-lobes 4, linear, elongated, reflexed; fruit clavate, red; seeds brown. 



Type locality: Honduras. 



Distribution: Honduras and Guatemala. 



We have had the Guatemala plant under observation for 14 years and it has both 

 flowered and fruited. 



Figure 120 is from a photograph of a plant sent by Dr. A. W. Kellermann from 

 Guatemala in 1908. 



Fig. 121. — Neomammillaria pringlei. 



72. Neomammillaria pringlei (Coulter). 



Cacltis pringlei Coulter, Contr. U. S. Nat. Herb. 3: 109. 1S94. 

 Mammillaria pringlei K. Brandegee, Zoe 5: 7. 1900. 



Solitary, with long fibrous roots, usually globose, but sometimes depressed or short-cylindric, 6 

 to 1 6 cm. high, 6 to 7 cm. in diameter; tubercles dull green, terete, conic, 6 to 10 mm. long; axils of 

 tubercles woolly and setose; spines all yellow; radial spines 18 to 20, setaceous, spreading, 5 to 8 mm. 

 long; central spines 5 to 7, much stouter and longer than the radials, more or less recurved, 2 to 2.5 

 cm. long, those from the upper areoles curved over the apex of the plant; flowers deep red, 8 to 10 

 mm. long; fruit borne in a circle near the middle of the plant, oblong, 12 to 15 mm. long; seeds small, 

 brown. 



Type locality: Cited as San Luis Potosi, but doubtless Tultenango Canyon, state of 

 Mexico, according to Pringle, who collected the type. 

 Distribution: Known only from the type locality. 



