CHLORIDE.E. 



409 



broader and much shorter; cmi)ty ghiriios sometimes 2-3, the low- 

 est mueli like the floral ghime, tliose above smaller, l-awned or awn- 

 less or sometimes only one; pulea included by its glume, hyaline, 

 2-keeled near the margins. Stamens 3. Styles distinct, stigma-s 

 feathery. Grain narrow, oblong, subterete, pericar]) easily removed 

 from the seed. 



Tall grasses with flat blades. Spikes many, slender, sessile, 

 erect or spreading on the peduncle, formiug a dense oblong panicle, 

 softly echiuulate with many long bristles. Si)ikelets slender, erect.' 



Fig. 1^ —Chloropsis pluriflora. Spikelet dissected. (Scribner.) 

 There are four or five species known, of which 3 are found from 

 Texas to Arizona and two in South America. Nearly allied to 

 Trisetaria and to Chloris. 



Spikelets 3-5-flowercd ^ 



Spikelets mostlv 2-flowered o 



