84 CACTUS CULTURE FOR AMATEURS, 



yellow; tube short, petals l.V inches long, narrow, pointed, and all 

 directed upwards. Native county, Mexico. Requires greenhouse 

 treatment, or ma} 7 be placed in a sunny frame out of dcors during 

 summer. (Fig. ^0.) 



M. macromeris. 



Stem 4 inches high, woody and wrinkled when old. Tubercles 

 as in M. longimamma, but with needle-like spines often 2 inches in 

 length, white when young, almost black when old. Flowers 

 produced in August from the centre of the stem, 3 inches wide ; 



Fig. 41. Mamillaria macromeris. 



thr petals regular and spreading ; stamens numerous, short, forming 

 a disk ; colour carmine, purple when fading. Mexico, in loote 

 sand. Requires the same treatment as M. longimamma. (Fig. 41.) 



M. macrothele. 



Belongs to the same group as M. cirrhifera, but the largo 

 mamma} are four-angled, narrowed to a point, upon which is a tuft 

 of wool and a cluster of about eight reddish spines, J inch long, 



