PLATE C. 

 Fig. 13. Hemarthria compressa, R. Br. 



«. Portion of rachia showing the embedded spikelets. 



b. Single spikelet. 



o. Male floret. 



d. Female floret. 



Fig. 14. Andropogon Ischcemum, Linn. 



a. Cluster of spikelets, the lower sessile one fertile and awned, 



the upper stalked o*ne sterile and without an awn. 



b. Fertile floret, flowering glume reduced to a slender awn. 



c. Male floret. 



Fig. 15. Andropogon muricatus, Retz. 



a. Pair of spikelets, one sessile and fertile, the other stalked and 



sterile. 



b. Male spikelet. 



c. Polygamous spikelet. 



Fig. 16. Andropogon pertusus, Willd. 



A pair of spikelets showing the pit on the back of the outer 

 glume, and the long twisted awn of the fertile spikelet. 



