50 



GRAMINE^. 



TRIBE VII. 



TRIBE VIII. 



nerved, ovary with a villous top. 55. Avena. 



Perennials. Spikelets erect. Fl. gls. 3-5-nerved, 



ovary quite glabrous. 56. Trisetum. 



CHLORIDES. Spikelets 1- or more fld., 2-seriate 



(sometimes very distantly) and secund on an 



inarticulate or on the spiciform branches of a 



slender panicle ; fl. all or the lower only bisexual ; 



rhachilla produced or not beyond the upper fl. gl. 



* Spike solitary, terminal. 



Spikelets 1-2-fld., in sessile inarticulate clusters, 

 awned. 57. Enteropogon. 



Spikelets many-fld., fl. gl. 3-awned. 



58. Tripogon. 

 ** Spikes or spiciform, branches digitate, racemed or 



panicled. 



Spikes digitate, 1-fld., upper imperfect fl. 0. 



59. Cynodon. 



Spikes solitary, spicate or racemed ; spikelets 2- 

 or more fld., upper fl. imperfect. 60. Chloris. 

 Spikes digitate or whorled ; spikelets 3-6-fld., 

 densely crowded, awnless. 



Spikelets densely imbricate, pointing fore- 



wards, gl. II acnte. 



61. Eleusine. 



Spikelets erect, at right angles to the rhachis 

 of the spike. Glume II short, suborbicular, 

 abruptly shortly awned. 



62. Dactyloctenium. 



Spikes panicled filiform ; spikelets very minute, 

 alternate, 1 or more fld., awnless. 



63. Leptochloa. 



FESTUCACE^E. Spikelets 2- or more-fld., pedicelled, 

 rarely sessile, in effuse or contracted rarely spiciform, 

 panicles ; rhachilla articulate at the base and often 



