39 



2. Glumes acuminate, coarsely hispid. Blades acute 6-12 



inches long L. longifolia. 



Glumes acute, finely hispid. Blades with an obtuse 

 callous point 3-4 in. long L. obtusifolia. 



LOLIUM. 



1. Florets turgid, the uppermost equalled or exceeded by 



the glume L. temulentiim. 



Florets not turgid 2 



2. Rather tall; axis slender. Glume much shorter than the 



spikelet L. multiflorum. 



Short; axis stout. Glume equalling the spikelet ... 



L. rigidum var. rottboellioides. 

 MELICA. 



1. Valve hairy all over 2 



Valve hairy only along the sides 3 



2. Culms profusely branched. Spikelets up to 4 tin. long. 



M. neesii. 

 Culms simple. Spikelets 5i-7 tin. long ... M. decumbens. 



3. Leaves hairy. Fertile floret 1, shorter than upper glume. 



M. bolusii. 



Leaves glabrous. Fertile florets 2, not shorter than 



upper glume 4 



4. Culms 3-6 inches, profusely branched M. pumila. 



Culms 2-3 feet, simple or scantily branched 5 



5. Spikelets 3-5 lin. long. Upper glume rather narrow. 



M. racemosa. 

 Spikelets 2-3 lin. long. Glumes broad M. oralis. 



MICROCHLOA. 



Spikelets 1-1£ lin. long. Valve abruptly and shortly 



acuminate M. selacea. 



Spikelets lf-2]- lin. long. Valve minutely cuspidate ... 



M. caffra. 



PANICUM. 



1. Spikelets in racemosely arranged secund, or sub-secund 



false spikes 2 



Spikelets in loose or rareiy in dense cylindrical 

 panicles ... 16 



2. Spikelets 1-2 ranked, or if 4 ranked then glumes and 



valves not cuspidate, nor awned 3 



Spikelets 4 or more ranked, or if 2 ranked then glumes 

 cuspidate or awned 12 



