Panicum .] 
CLVII. GRAMINEJE (Stapf). 
643 
Taller coarser grasses with longer panicles (5-8 in.). 
Spikelets pubescent, up to £ lin. long 13. P. Frederick 
Spikelets glabrous, about 1 lin. long ... ... 14. P. juncifolium. 
Leaf- blades not setaceously convolute or if convolute then 
much over 1 lin. wide when unrolled ; loosely or 
scantily tufted grasses with mostly many-noded 
culms. 
Culms erect, stiff or only slightly geniculate, somewhat 
robust ; leaf-blades 4 to over 12 in. by l-|-4^ lin. 
Culms about 6-noded ; blades of lower leaves long- 
narrowed towards the base with recurved 
margins and a dorsally much projecting midrib 15 P. carinifolium. 
Culms frequently more than 6- (up to 12-) noded ; 
blades flat or somewhat involute, not or only 
slightly narrowed towards the base, with a 
slender midrib. 
Blades stiff, erect, glabrous except for some long 
cilia near the base ; sheaths eciliate ; spikelets 
almost 1 lin. long, rather obtuse, dull ; lower 
glume | the length of the spikelet or almost as 
long 16. P. strictissimum. 
Blades spreading or reflexed, usually hairy at the 
base above the ligule ; sheaths ciliate ; 
spikelets 1-1 £ lin. long, shortly acute with 
strong metallic lustre ; lower glume about 
£ the length of the spikelet ... ... ... 17. P. 'prcealtum . 
Culms slender to very slender, weak and usually 
geniculately ascending ; leaf-blades narrow 
(1-2 lin.) and usually much under 6 in. long. 
Spikelets over 1 lin. long, very plump, in slightly 
subsecund and sometimes nodding panicles, 
quite glabrous ; culms sparingly branched : 
blades 3-7 in. by 1^-2 lin. ... ... ... 18 . P. subrepcmdum. 
Spikelets under 1 lin. long ; panicles erect, quaqua- 
versal, usually stiff ; blades 2-4 in. by 1-1 \ lin. 
Panicles distinctly and usually long-exserted ; 
spikelets roundish in outline to almost 
orbicular. 
Spikelets quite glabrous with a conspicuous 
bronze lustre, almost globose ; lower 
glume |— £ the length of the spikelets ; 
culms simple or sparingly branched below 19. P. fulgens. 
Spikelets pubescent, very rarely glabrous, dull 
without a metallic lustre. 
Culms simple or sparingly branched below ; 
blades spreading, flat, flaccid ... ... 20. P. nervatum . 
Culms much branched below, the branches 
in erect leafy fascicles ; blades suberect, 
flat or convolute, rigid, running out into 
a long subulate point ... ... ... 21. P. pubiglume. 
Panicles shortly or laterally exserted and often 
equalled or overtopped by the uppermost 
blade ; spikelets ovate to lanceolate-oblong, 
acute, glabrous, with a faint metallic lustre ; 
culms simple or sparingly branched below ; 
blades obliquely erect, frequently convolute, 
slightly rigid, quite smooth ..22 . P. plagianthum . 
