No. IGTi, 



MAMMILLARIA DISCOLOR. 



ICOSANDRIA 



Orde r. 



MONOG YNIA 



111 1829 we received this plant, with se- 

 veral other species, from Mr. Deppe, at 

 Xalapa, in New Spain, where it grows on 

 rocks. In the followlnij summer it pro- 

 duced a number of flowers : they are very 

 pretty, and the whole plant is exceedingly 

 curious and interesting, as are all the family 



to which it belongs. 



It should be kept on a dry shelf in the 

 stove, with no water at all in winter, and 

 in summer very little : the soil should be 

 sandy loam. We have not yet propagated 

 it, but have some hopes of hs bearing seeds. 



VOL. xvii. 



z 



