294 
clvii. GRAMiNEiE (Stapf). [Hyparrhenia. 
Racemes neither spreading nor epinastically 
deflexed, the inner faces of their bases 
permanently contiguous or parallel: annual IX. Involucrata. 
Raceme-bases produced into a large obovoid- 
cuneate cornucopise-like appendage, 4-5 lin. 
long, embracing the base of the succeeding 
spikelets X. Cornucopia. 
**Lower glume of fertile spikelets with a pair of deep 
circular or subcircular pits ; a small annual grass 
(§ Dibarathria) XL Pusilla. 
I. Rufa. 
*Tall coarse grasses, often as high as a man or higher, with 
stout culms, long leaf -blades and usually large decom- 
pound panicles. 
f Racemes dense, never long and densely villous 
when mature not epinastically deflexed ; spikelets 
small (fertile l|-2-|- lin., pedicelled 2-2^ lin. long, . 
but see 1, H.finitima) ; spatheoles rarely over 25 lin. v fo**' 
long. 
Mature peduncles 6-12 lin. long, enclosed in the narrow 
loosely inrolled spatheoles which usually much 
exceed them on maturity ; racemes 5-8 lin. long, 
the pair with 3-5 fertile awned spikelets ; glumes 
pale with reddish tips, mostly sparingly hairy, 
hairs short, whitish or fulvous ; cilia white ; 
pedicelled spikelets 6 or neuter. 
Fertile spikelets 4-5 per raceme-pair, 3 lin. long; 
callus very acute, f lin. long ; awn 17-22 lin. 
long 
/ v 
1. II. finitima. 
Fertile spikelets 3-4 per raceme -pair, up to 2-|- lin. 
long ; callus subacute, under \ lin. long ; awn 
10-12 lin. long ’ 
Mature peduncles over 10 lin. long, almost as long as 
or longer than the spatheoles ; racemes 7-12 lin. 
long, the pair with 6-13 fertile awned or (6, H. 
exarmata) awnless spikelets. 
Fertile spikelets awned : perennial. 
Peduncles 12-18 lin. long, almost to quite as 
long as the narrow loosely inrolled spathe- 
oles ; glumes of fertile spikelets usually 
greenish or pale with reddish or purple tips, 
rather dim, their hairs pale fulvous ; callus 
beards and lower cilia white ; pedicelled 
spikelets neuter, usually with a single small 
scale-like ciliate valve ... 
Peduncles 20-30 (occasionally to over 40) lin. long, 
exserted from the tightly inrolled spatheoles ; 
fertile spikelets usually rufous or purplish ; 
pedicelled spikelets mostly 6 with well- 
developed valves, less often neuter with more 
or less reduced valves. 
Raceme-bases not epinastic, the longer 
pubescent, not bearded with stiff hairs ; 
spikelets mostly rufous and slightly glossy, 
with short hairs 
2. H. gazensis. 
I ZIZ *): t/ Cu<~ 
3. H. dichroa. 
U- £s tr'-t"*-' 
4. H. rufa. 
