PLATE D. 

 Fig. 17. Chrysopogon Gryllus, Trin. 



a. Cluster of three spikelets, the central one sessile and herma- 

 phrodite, the two lateral stalked and sterile. 



Fig. 18. Sorghum halepense, Pers. 



a. Cluster of three spikelets, the central sessile one hermaphro- 

 dite, the two lateral stalked and sterile. 

 b Hermaphrodite awned floret. 

 c. Male floret. 



Fig. 19. Anthistiria ciliata, Linn. f. 



a. Four sterile florets each composed of a single pale. 



b. Polygamous spikelet. 



c. Flowering glume and pale of male floret. 



Fig. 20. Apluda mutica, Linn. 



9 J^ 



A cluster of spikelets with its spathe-like bract. 



Fig. 21. Crypsis aculeata, Ait. 



a. Single floret deprived of its coverings. Stamens reduced to 



two. 



b. A Spikelet. 



Fig. 22. Alopecurus agrestis, Linn. 



a. Flowering glume showing the dorsal awn. 



b. Pistil. 



