THE EVIDENCE 



59 



tion under glass, but it is only in botanic gardens 

 that they are to be seen in any numbers. There 

 is a magnificent collection at Kew, chiefly in the 

 Palm-house. They are natives of the tropical 



Fig. 1. Male plant of Stangeria schizodon, bearing several 

 cones. Kew. 



and sub-tropical regions of the earth. Of the 

 nine genera, one, the type-genus Cycas (fig. 6,) 

 is common to Asia and Australia; two, Macro- 

 zamia (figs. 2 and 3) and Bowenia, are Australian; 

 two, Encephalartos and Stangeria (fig. 1), are 

 South African; while four, Zamia, Ceratozamia, 



