THE MONOCOTYLEDOXES 



2085 



Fig. 2021.— Zt-rt. A, Male flower. B, Male spikelet. Sorghum. C, Flower. D, Spikelet. 



Fig 2022.— Z^rt mats. Maize. Plant with terminal 

 panicle or " tassel " of male flowers and 

 axillary spike of female flowers still sheathed 

 in its enclosing bracts. 



