10.345 
Mamillaria 
Plant flo¥/eririg April 26, 1912; 6.5 cm. in diameter, 5.5 cm. high, 
with two small stems 3 to 3.5 cm. in diameter, branching out at sides; 
axils at top nearly full of wool, while at sides wool often ?/anting: tu- 
bercles green save for diseased spots, 4-sided at base, ?/ith acute angles 
at i sides and obtuse angles at top and bottom, more obtuse at top; nose 
of tubercles somewhat rounding, truncate; areoles on young tubercles 
bearing dirty ?rtiite ifool, also bearing central spines, 4, and 5 
longest 
one varying from 1 to 6.25 cm. in length, tending downward, usually curved 
somewhat flexible, growing from center of areole, and surrounded by 4 
usually, sometimes 3 smaller ones, one pointing down, two divergent later- 
ally, and one porrect, the lower three being about same size, 2 to 5 mm. 
long; radials none; old tubercles bearing hhxs^xhxs spines 
the long one 
dark grayish with slightly bro¥/n tips; shorter spines grayish white; spine 
