Panicum.] clvii. gramine^i (Stapf). 645 
Culms 3-noded, soft, hirsute, internodes shortly 
exserted except the uppermost ; spikelets 
up to over 1\ lin. long, dull green with purple , r 
or altogether dark purple ... ... ... 34. P. poceoides. 
Upper glume and lower valve 5-nerved or the former 
7-nerved. 
Spikelets § lin. long, somewhat turgid, in narrow 
contracted often interrupted panicles ... ... 35. P. graniflorum. 
Spikelets 1-1 £ lin. long, not turgid, nor the panicles 
as in P. graniflorum. 
Compactly csespitose, the slender culms densely 
coated with the firm persistent leaf-bases ; leaf- 
blades narrow, flat or setaceously convolute, 
flattened out l-2£ lin. wide. 
Panicles open, up to 1£ in. wide, delicate, very 
loose and somewhat stiff, often with ex- 
tremely fine long hairs downwards ; spikelets 
widely and obliquely gaping, f-1 lin. long ; 
blades setaceously convolute, up to 1 lin. 
wide (flat) ... ... ... ... ... 36. P. congoense. 
Panicles open, 2-4 in. wide, glabrous ; spikelets 
usually less and not so obliquely gaping, 
1-1£ fin. long ; blades 1-2| lin. wide (flat). 
Spikelets 1 lin. long ; panicle very loose, 
divisions very fine ; blades often flat ; 
culms |— § lin. diam. 
Whole plant glabrous ; culms 4-noded ; 
leaf-blades flat ... ... 37. P. vagiflorum . 
Whole plant more or less hairy, except the 
panicle ; culms 1-noded ; leaf -blades 
flat or setaceously convolute upwards ... 38. P. pcecilanthum . 
Spikelets mostly 1£ fin. long ; panicle less 
loose, divisions less fine and stiffer ; lowest 
sheaths tomentose at the base ; blades 
flat or setaceously convolute, firm and 
more or less rigid ; culms 1-2-noded, up to 
1 lin. diam 39. P. dregeanum . 
Not compactly csespitose nor with a dense coat of 
persistent sheath-bases. 
Panicle with long spreading hairs from all axes ; 
glumes long-mucronate 40. P. Pilgeri. 
Panicle glabrous. 
Culms simple, reed-like, stout, 4-6 ft. high, 
4-6-noded ; blades ft. by 2-5 fin. ; 
panicle J to over 1 ft. by 2-5 in. ; upper 
glume faintly 5-nerved ... 41. P.aphano- 
neurum. 
Culms slender, more or less branched ; upper 
glume usually 7 -nerved. 
Culms sparingly branched ; panicle con- 
tracted, narrow, 6-2 in. by 1-2 in. ; spike- 
lets up to almost fin. long ; blades 
1-2 lin. wide. 
Culms up to 9-noded ; blades up to over 
1 ft. ; lower glume distinctly 5-nerved, 
§-f the length of the lower floret ... 42. P. Rowlandii. 
Culms 4-noded ; blades 4-8 in. ; lower 
glume with obscure side-nerves, f-f 
the length of the lower floret ... 43. P. fluviicola. 
