ECHINOCACinS. 



37 



above, for it has undergone a most peculiar change. Instead of the regular 

 eymmetical cylindrical stem it has become contorted, flattened, and irregu- 

 larly twisted like the f asciated crest in the common Cockscomb. The surface 

 is densely covered with small white tufts about the size of a large pin's head, 

 from which arise numerous diminutive white hairs one-eighth of an inch 

 long or less, and on the edge of the flattened lobes is a distinct furrow, which 

 follows the twisting stem in each direction. In the sun the plant has a 



Fig. r. 



silvery appearance, which is very beautiful, but to preserve this dust or dirt 

 of any kind must be carefully excluded from it. It is rather slow-growing, 

 but succeeds best when grafted on a short stem of some Cereus, such as 

 C. Baumanni, C. macrogonus, or C. peruvianus, and less difficulty is then 

 experienced in keeping it in good health. 



E. SiMPSONl. — This is especially deserving of notice as one of the hardiest 

 of the genus, for it has been tried out of doors in some districts, and has 



