12 



TH^ CACTAC^A^. 



Distribution: 

 Cereus peru 



South America ; widely planted in tropical America 

 tortuosus (Salm-Dyck, Cact. Hort. Dyck. 1844. 30. 



and 



peruvianus tortus (Salm-Dyck, Cact. Hort. Dyck. 1849. 46. 1850) are names 

 Cereus peruvianus monstrosus is a common garden form first descnbed ai 



It is similar to the typical form excel 



f f . 



by De Candolle (Prodr. 3:464. 1828). _ .. ^ u a u 



ribs are often broken into irregular tubercles or are unevenly sulcate. This has also been 



A 



^ r. 



h ■ L 



;. s 





-# 



Fig. 12. — A cultivated specimen of Cereus argentinensis 





< 



- s 

 '1 



taken up 



^ (Monatsschr. 

 tl, Pflanzenfam 

 (Enum. PI. Su 



Nom 



I 



1894). 



Schumann (Engl 



similar form mentioned by Schumann (Gesamtb. Kakteen 



seems to be the same as Cactus ahnormis Willde- 

 peruvianus monstruosus nanus is a somewhat 



1897) perhaps intended 



a* «f(S;a?b^nS Mo^S^^^^^^ '''■ ^'^'^- Another abnormal form is C. />e.«.an«. 



