a. 



\ 



li 





1 



4 



I 



f 



( 



/ 



\ 



I 



i 





J 



TAB. VIL 



GRASSES — continued. 



Fig. 15. AiRA.— a. Spikelet. h. Floret. 



Fig. 16. MEMCA.—a. Glumes, h. Two florets from the spike- 

 let, with the rudiment of a third floret between 

 them, c. One fertile floret from the spikelet with 

 its neuter floret. 



Fig. 17. HoLcus.— a. Glumes, h. Two florets from the calyx ; 



the upper one with stamens only and awned ; the 

 lower one perfect and awnless. 



Fig. 18. Arrhenatherum. — a. Spikelet, with 2 florets, the 



lowest floret with stamens only, and a long twisted 

 awn; the upper (shown separately at h.) perfect, 

 with a short straight awn. 



Fig. 19. HiERooHLOE. — a. Glumes, h. The 3 florets, of which 



the two lateral ones have 3 perfect stamens only 

 and no pistil ; the middle one perfect, diandrous. 



Fig. 20. Sesleria. — a. Spikelet. J. Floret. 



Fig. 21. Panicum. — a. Unequal glumes with the neuter floret 



inside the smaller glume. &. Fertile floret. 

 Fig. 22. Setaria. — a. Bristly involucre with the spikelets. 



h. Unequal glumes, with the neuter floret inside the 

 smaller one. c. Perfect floret. 



Fig. 23. PoA. 



Spikelet. h. Floret. 



Fig. 24. Triodia.— a. Spikelet. b, Glumellas of a floret. 

 Fig. 25. Briza.— a. Spikelet. J. Floret. 

 Fig. 26. Dactyms.— a. Spikelet. &. Floret. 





w- 



