64 THE EVOLUTION OF PLANTS 



The two kinds of cone are much alike in out- 

 ward appearance, the female being generally the 

 more robust. 



Fig. 3. Macrozamia spiralis; male plant, bearing several 

 cones. Lower leaves removed. Kew. 



We will begin with the male fructifications, 

 which are among the largest known, the cone 

 itself, without the stalk, often reaching a foot or 

 more in height (fig. 3). 



