CYCADALES 



III 



moorei, the original apical meristem persists from the embryo to 

 the death of the plant. 



While the cones do not reach the great length and weight of some 

 of the female cones, they are nevertheless the largest living male 



/OS 



iOH 



Figs. 103-105. — Megaspores of cycads. Fig. 103, Stangeria paradoxa; the lower cell 

 of the row of three is the functioning megaspore; X250. — After Lang. «' Fig. 104, Cera- 

 ^osawwwexjcawa, similar stage; X266 — After Treub.^« Fig. 10$, Zamiafloridana, row 

 of four megaspores; X 930.— After Dr. F. Grace Smith.s^s 



cones and are probably larger than those of their geological an- 

 cestors. 



