8 ADDISONIA 
The genus was first described in 1841, but in 1853 Lindley & 
Paxton referred it to Echeveria, while in 1865 Bentham & Hooker 
combined it and Echeveria with the South African genus Cotyledon. 
J. N. Rose. 
EXPLANATION oF Piate. Fig. 1—Plant. Fig. 2—Flower, seen from above, 
Fig. 3.—Flower, lateral view, with the calyx removed. Fig. 4.—Flower, opened, 
exposing stamens and pistil. 
