Cactearum,’’ that he refers the Mam™ittaria atrata of gar- 
dens to the M. rhodantha, Linx and Orro, “ Hortus Beroli- 
nensis ;” but from that our plant is wholly different; nor 
do I find it characterized in any work to which I have 
access. The drawing was kindly communicated by the 
Messrs. Mackte ; but the native country does not appear to 
be ascertained ; though probably Chili, from whence it is well 
known that Mr. Hrrcutn, the former possessor of Mr. Mack- 
1z’s collection, received many excellent Cacrez. As I have 
not had the advantage of seeing the living plant, I abstain 
from offering any description, which could no way illus- 
trate so excellent a figure as that which is here given. 
