G124 



SPIKE TRISETUM 



Trise'tum spica'tum, syn. T. subspica' turn 



Individual flower groups (spike- 

 lets) small, numerous, crowd- 

 ed, usually 2-flowered 



Outer flower bract (lemma) 

 keeled, 2-toothed at tip, with a 

 short (about % in. long), slender, 

 bent, twisted bristle (awn) aris- 

 ing from below the tip between 

 the teeth, short-hairy at base 



Lowest (2) spikelet bracts 

 (glumes) somewhat' unequal, 

 persistent, without awns; 1st 

 glume 1-nerved; 2d glume 

 broader, 3-nerved 



Flower heads (panicles) dense, 

 spikelike, erect, greenish or 

 purplish, shining, 1 to 6 in. long 



Leaves flat or inrolled in age, 

 rather narrow, about 2 to 6 in. 

 long, usually more or less hairy; 

 sheaths hairy 



Stalks (culms) densely tufted, 

 erect, hairless to downy -hairy, 

 up to 20 in. high 



Roots fibrous, perennial 



