50 



GRAMINE.E. 



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



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



ovary quite glabrous. 56. Trisetum. 



TRIBE VII. 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-IId.. in sessile inarticulate clusters, 

 awned. 57. Enteropogon. 



Spikelets many-lid., tl. gl. .'5-awned. 



58. Tripoyon. 

 ** 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 acute. 



61. Eleusine. 



Spikelets ereet. at right angles to the rhachis 

 of the spike. Glume II short, suborbicular, 

 abruptly shortly awned. 



62. Dactyloctenium. 



Spikes panieled lilifonn ; spikelets very minute, 

 alternate, 1 or more fld., aw r nless. 



63. Leptochloa. 



TRIBE VIII. FESTUCACE.E. Spikelets 2- or more-fld., pedicelled, 

 rarely sessile, iu effuse or contracted rarely spiciform, 

 panicles ; rhachilla articulate at the base and often 



