MACLOSKIE: GRAMINE^E. 163 



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5. P. PUMILUM Nees. 



Root densely fibrous, cespitiferous. Culm simple, ascending, paucinodal 

 (15-25 cm.), filiform, glabrous. Leaves lax, glabrous to soft-villous ; 

 ligule very short ; blades lance-linear (25-50 mm. long, 5 mm. broad), 

 acute, plane, pubescent or villosulous. Racemes approximate in pairs. 

 Rachis plane, narrower than the solitary spikelets ; these 1.5 mm. long. 

 Glumes orbiculate, elliptic, obtuse, glabrous, the lower 5-, the upper 3- 

 nerved. Perennial. 



(Brazil) ; N. Patagon., wet places by Rio Negro, near Carmen. 



5. ANTH^ENANTIA Beauv. (R. & S. sub. Milium.} 



Erect grasses with oblong, lax, more or less silky panicles, having fili- 

 form rays and pedicels. Spikelets articulating on the pedicels, having 

 3 glumes, the uppermost or floral glume, enclosing the palea and a herma- 

 phrodite flower, the second slightly larger and empty, or having a male 

 flower, the lowest glume the largest. Grain freely enclosed in the perga- 

 mentaceous glumes. 



Species about 5, from California to Patagonia. (By O. Ktze. made a 

 section under Panicum.} 



A. LANATA Benth. (Panicum insulare lachnanthum O. Ktze.) 



Culm erect. Leaves subinvolute or pilose on upper surface, the lower 

 sheaths villous. Panicle jubate, its rays whorled. Spikelets acute, 3 mm. 

 long. Lowest glume s-y-nerved, villous-woolly, acute, exceeding the 

 flower. " Border of third valve, and whole of second valve glandular- 

 hairy; small first valve under the third, naked." 



(Surinam, Brazil) ; N. Patagon. 



6. PANICUM Linn. 



Branches of panicle either simple or again divided. Pedicels jointed 

 under the spikelets. The spikelets i-2-flowered, when 2-flowered the 

 lower is staminate only. Glumes 4, the lowest awnless and very small. 

 Thus there are three empty glumes, or two empty glumes with a staminate 

 flower in the third. Grain free, in a hardened fruiting scale. (Brit. & 

 Br. i, 2, 113.) 



Species 300, cosmopolitan in warm climates ; few in Chili. 



