FESTUCEAE 



127 



Hairs, if any, on the rachilla and flower- 

 ing glume shorter than the glume. 



Stigmas barbellate or long styles: 

 spikelets in threes in the axils of 

 spinescent leaves: plant prostrate 

 spreading, cobwebby or woolly 

 while young. •''■»• Munroa 



Stigmas plumose, sessile or on a short 

 style. 

 Flowering glumes 1- to 3-nerved. 

 Lateral nerves of the flowering 

 glumes hairy. 

 i<'lowering glumes deeply 2-lobed. 55. Dasychloa 

 Flowering glumes entire or slight- 

 ly 2-lobed. 

 Inflorescence a short crowded 

 raceme: leaf blades with 

 thick cartilaginous margin: 



plant low and tufted. 5C. bRioxEURON 



Inflorescence a panicle: leaf 

 blades without cartilaginous 

 margin; plants taller. 5 7. Tridexs 



Lateral nerves of the flowering 

 glumes glabrous. 

 Second empty glume similar to 

 the first or nearly so. 

 Panicle najTOW, dense and spike- 

 like, shining. Its branches 

 erect. 5S. Koeleria 



Panicle open. its branches 



spreading. 59. Eragrostis 



Second empty glume unlike the 

 first one, bioad at the sum- 

 mit, il". Eatoxia 



Flowering glumes 5- to many-nerved. 

 .Spikelets with two or more of the 

 upper glumes empiy, broad and 

 enfolding each other. 'H- IMelica 



Spikelets with the upper glumes 

 flowcr-bearir.g or narrow and 

 abortive. 

 Stigmas placed at or near the 

 apex. 

 Chinees more or less laterally 

 compressed and keeled. 

 Plant dioecious: nowe-ing 

 gluiTie of tne pis.illate 

 spikelet coriaceous; plants 

 of alkaline flats and val- 

 leys, 

 flants with mostly perfect 

 flowers: flowering glumes 

 thin, scarious margined: 

 plants of the mountains. 

 (Jlun.es rourded on the back at 

 least below the middle, 

 ricwerirg glumes obtuse or 

 acutish and scarious at 

 the apex, usually toothed. 

 Style present: flowering 

 glume distinctly 5-to 7- 

 nerved. 65. Pakictlaria 



G2. DiSTICHLIS 



C4. POA 



