xxiv PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



Last autumn I was fortunate enough to get, by the aid of Mr. 

 N. H. Witt, plentiful specimens of the plant. After having carefully 



Fig. 120. — Cereus Wittii, a climbing Cactus. {Gardeners' Chronicle.) 



The right-hand branch shows the Cactus appressed to the stem of a Palna]; the 

 joints have been represented as more conspicuous than they really were in the photo- 

 graph. The left-hand branch has been broken at intervals to detach the joints of the 

 Cactus and render them visible. 



examined it, I found two fruits of ovoid form as large as a pigeon's egg, 

 beset with very sharp prickles. This organ had all the characteristics of 



