NEOMAMMILLARIA. 115 
71. Neomammiillaria ruestii (Quehl). 
Mammillarta ruestit Quehl, Monatsschr. Kakteenk. 15: 173. 1905. 
Mammillarta celstana guatemalensis 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, purplish 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. 
Fic..121.—Neomammillaria pringlet. 
72. Neomammillaria pringlei (Coulter). 
Cactus pringlei Coulter, Contr. U. S. Nat. Herb. 3: 109. 1894. 
Mammillaria pringlet K. Brandegee, Zoe 5:7. 1900. 
Solitary, with long fibrous roots, usually globose, but sometimes depressed or short-cylindric, © 
; x; axils of 
to 16 cm. high, 6 to 7 cm. in diameter; tubercles dull green, terete, conic, 6 to io aa one aS ne 
tubercles woolly and setose; spines all yellow; radial spines 18 to 20, setaceo oe iss wectrced 2 to 2.5 
long; central spines 5 to 7, much stouter and longer than the radia’s lant: flowers deep red, 8 to 10 
cm. long, those from the upper areoles curved over the apex of the p an 7 wer long. seeds stnall, 
mm. long; fruit borne in a circle near the middle of the plant, oblong, 12 to 15 
town. 
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. 
