THE GYMNOSPERMS 



367 



. 361 



A cycad (Cycas revoluta), showing cluster of fertile leaves (macrosporopbylls) in the center. 



Fig. 362. 



A sporophyll (stamen) of cycas; sporangia in 

 groups on the underside, b, group of sporangia; 

 c, open sporangia. (From Warming.) 



Fig. 363. 



Macrosporophyl! of Cycas 

 revoluta. 



