716 GRA MINGZ 
Med) 4 Be Se : 
23 Aristida” Awn triple, continuous or articulated with the glume. 
24 Phleum Panicle dense and spike-like: glumes distinct: awn simple. 
25 Alopecurus peearete spike-like: glumes more or less united at base : 
awn simple. i: 
TRIBE VI sieaitionn: Spikelets panicled ai mieriit flowered, 
rachis often: bearded, prolonged into an imperfect rudiment. ? 
Glumes mostly equalling or exceeding the flower. Flowering: 
glumes usually bearing an awn on its back or between its teeth. 
* Spikelets with 2 or more lower flowers perfect. 
26 Danthonia Spikelets several-flowered, awned from the 3 united” 
middle nerves. 
27 AvENA ’ Spikelets 2-flowered, awned from the midnerve only. 
28 Trisetum Spikelets 2-several-flowered : flowering glume 2-toothed 
at the summit, awned from the midnerve only. 
29 Arra Spikelets 2-flowered, both perfect, the rachella not prolonged 
beyond the upper one. 
30 Deschampsia dg sated with 2 perfect flowers, the rachella prolonged 
beyond the second flower 
* * Spikelets 2-flowered with one flower staminate 
31 ne Ag Lower flower staminate, upper perfect and usually 
awnless. . 
82 Hoxcus Lower flower perfect, awnless, upper staminate and awned. 
TrisE vil Festucrm Spikelets panicled, 2-many-flowered, 
the rachis usually prolonged ang X PRAT an xn perfect flower or 
bristle. 
. * JFower one or. two flowers staminate or neutral. 
88 Munroa Spikelets in clusters in the wxils of the upper leaves, with: 
the two lower glumes empty. 
34 Phragmites epialeta in an ample panicle, with one staminate flow- 
er below 2-4 perfect ones: rachis bearded with long hairs. : 
* * Lowest flowers all perfect: grain not adherent to the palet. 
+ Flowering glumes pointed, awned or acute, the nerves, when 
present, running into the point. 
35 Dacryuis Spikelets in dense one-sided clusters in a one-sided panicle: 
glumes herbaceous, compressed, awn-pointed. 
86 Keleria Spikelets i in a dense spike-like panicle: ginsics membranous, 
keeled, pointed or mucronate. ct 
+ + Flowering glumes pointless and, enone in Melica, awriless, 
obtuse; the nerves parallel. vif 
++ Flowering glume 1-nerved; ‘the palet S-nerved. “ 
$7 Eatonia Glumes very unlike; the upper one much broader than- the 
linear lower one and wrapped around the flower. 
++ ++ Qne or two of the glumes 5-nerved or more. 
38 Melica Flowering glumes flattish on the back, 7-nerved or more, 
membranaceoug at tip: fertile flowers 1-3, the upper enwrapping the 
