CEREUS. 



43 



as small examples do not flower. The species is often to be seen 

 in large conservatories, as it is easily kept in health. There are 

 fine examples of it at Kew. A variety, with fasciated stem, is 

 sometimes cultivated. Peru. 1830. 



Tig. 18.- Cereus procumbens. 



polyacanthus. 



Stein 10 inches long, 2 to 4 inches wide, pale green or glaucous, 

 th about eight ridges ; spines in clusters of half a dozen or so, 



