LV. GEAMINE^. 883 



hardened after flowering; lower glumelle of the fertile flower facing the lower 

 glume. Stamens 3-2. Stigmas usually elongated or filiform, protruding at the top 

 or sides of the flower. Caryopsis with a linear or punctiforni spot. 



Tribe V. PHLEINEM. 



Spikelets all fertile, laterally compressed, in a spicate panicle or spike, with one 

 5 flower, with or without the pedicellate rudiment of a second flower. Glumes 

 sub-equal or unequal, as long as or longer than the flower. Glumelles membranous ; 

 lower glumelle facing the lower glume. Stamens 3-2. Stigmas elongated, protruding 

 at the top of the flower or spikelet. Caryopsis with a punctiform hilary spot. 



PRINCIPAL GENERA. 



* Phleum. Alopeciirua. Crypsis. 



Beckmannia. Mibora. Oornucopin, 



Tkibe VI. AGB08TIDEJE. 



Spikelets all fertile, more or less laterally compressed, in a branched or spiked 



panicle, with a single 5 flower, rarely accompanied by the pedicellate rudiment of a 



second upper flower. Glumes sub-equal or unequal, usually longer than the flower. 



Glumelles between membranous and herbaceous, as are the glumes, the lower 



mutieous or aristate ; awn usually dorsal, and facing the lower glume. Stamens 3, 



rarely 1-2. Stigmas usually sessile, protruding laterally at the base of the 



spikelet. 



PRINCIPAL GENERA. 



Chseturus. Gastridium. Cinna. Fojypogon, 



Spoi'obolus. MuLlenbergia. * Agrostis. 



Tribe VII. 8TIPBM 



Spikelets all fertile, sub-cylindric or compressed, in panicles containing one 

 5J flower. Glumes sub-equal or unequal, equalling or longer than the flower. 

 GlumeUes becoming coriaceous when ripe, the lower answering to the lower glume, 

 often convolute, awned at the tip; awn simple or 3-fid, very rarely mutieous. Stamens 

 8; Stigmas protruding laterally towards the base of the spikelet. Caryopsis with a 

 linear hilary spot towards its middle or near its top. 



PRINCIPAL GENERA. 



* Milium. Lasiagrostis. *^tipa. 



Piptathentra, Machrochloa. Aristida. 



3x,2 



