72 NATURAL ORDERS AND ; 
Spikelets laterally compressed, many 
flowered, without hairs, awn 
Bimple....-. wwesess Suntek Avioasweed .. 6. SESLERIEZ. 
Spikelets with two or more flowers, the 
upper ones often barren. 
Glumes as long (or nearly) as the 
Bpikelet ....s0s0esee eveseevessovesers ¥. AVENINER. 
Glumes dwortie than the Wwe floret 8. Festuctne2&. 
Inflorescence imbricated or two sided 
spikes. 
Spikelets solitary, or two or three 
together, sessile, on opposite 
sides of a channeled and toothed 
PME LINGS cents seeeuedace bee Route a eseteae 9. HonDEINER. 
Spikelets of one perfect flower, placed 
edgewise on the rachis............ 10. RorTBoELLINE. 
Inflorescence in one sided spikes. 
Spikelets dorsally compressed............ 11. PANIcEz. 
Spikelets laterally compressed............ 12. CHLORIDEE. 
GENERA. 
TripE 1. PHALARIDER. : 
StAMENS LWO sercesecesvocccee cersscectececsseee ANTHOXANTHUM, V, bh. poe. 
Stamens three. 
Glumes strongly keeled ...........s+268. PHALARIS, Vv. 1. p. 78. 
Glumes not strongly keeled............... HizROCHLOE, Vv. 1. p. 108. 
TrisE 2. ARUNDINER. 
Inflorescence a close spiked panicle ...... AMMOPHILA, Vv. 1. p. 80. 
Inflorescence a loose spreading panicle. 
Glumes longer than the florets ......... CALAMAGROSTIS, Y. 1. p. 89 
Glumes shorter than the florets ......... ARUNDO, v. 1. p. 147. 
TrisE 38. PHLEINEZ. 
Inflorescence a close spiked panicle. 
Glumes simple, awnless ..........seeee0e. ALOPECURUS, V. 1. p. 74. 
Glumes keeled, and mostly terminating 
IN AN AWN .rceerececsnevesrscovereeee EPHLEUM, V. 1. p: 82. 
Inflorescence a somewhat one sided 
TACOMC cocecccsesccevevecerserccssese KNAPPIA, V. 1. p. 51. 
Tripe 4. AGROSsTIDER. 
Inflorescence a contracted spike-like 
panicle. 
Glumes swollen at the base............... GASTRIDIUM, Vv. 1. p 81, 
Glumes not swollen at the base ......... PoLypoaon, v. 1, p. 87. 
