_ 
~I 
_ 
~J 
bo 
pans 
gS 
8 
2. ‘Flowering glumes and palens ea falling icaethen carrying hee 
. Flowering glumes not coriaceous 
114 
. Spikelets sessile in short terminal spikes; flowering — 
92. ORC 
many-nervec UTTIA 
: rnin enc in racemes or panicles, these sometimes narrow - 
spike-lik 
. Flowering glumes 1- to 3-nerved or nerveless 19 
. Flowering glumes 5- to many-nerved 29 
. Callus or base of the flowering glume hairy or barbate.... 20 
. Callus or base of the flowering glume glabrous 23 
. Hairs extending more or less along the prominent nerves.. 21 
, x ee A: /. SB 7 +1 41 >: 1 ee 
“ 
o 5 ? 5 1 
. Flowering glumes tridentate (rarely entire) , the 3 nerves, or at 
least the middle one, prolonged between the teeth as mucros 
or very short awns . TRIODIA 
. Flowering glumes deeply 3-cleft, the lateral divisions narrow, 
the central one prolonged and awn-like ..__. 99. TRIPLASIS 
. Flowering glumes chartaceous, densely hairy on the callus, 
1 
nerves conspicuous. Tall grasses with ample, capillary 
panicles 
REDFIELDIA 
Flowering glumes bess apace apna — = the callus 
short; nerves obscur 8. CoLpopicum 
Empty glumes much longer than the subs glumes. 
DissANTHELIUM 
Empty — shorter than or not much Calta the flow- 
24 
rin ng glum 
. Flowering glumes coriaceous, shining, rounded on the back 
and subulate pointed; 2 to 4 of the upper glumes empty. 
109. Korycarpus 
25 
‘ acta subterete; flowering glumes rounded on the back; 
mpty glumes — shorter than the — age 
2. Moummi 
. Spikelets compressed; flowering glumes es or, if rounded 
the back, not much larger than the empty glumes... 26 
Empty glumes nearly equal in length, but very unlike, the 
rst narrowly linear net l-nerved, the second broadly 
obovate, obtuse, and 3-nerved 104. Eatonta 
Empty glumes more or lee sis ns in length, but similar in 
shape ra 
Flowering ane falling with the grain in advance of the 
pelene, which remain for a time attached to the continuous 
RAGROSTIS 
aire mes 
