No. 36. 
BOUTELOUA BURKEI Scribner. 
Rootstock short, strongly rooted, thickly covered with the crowded culms. 
Culms slender, 4 to 8 inches high, with 3 to 4 nodes each. 
Leaves mostly crowded at the base, small, 4 to 14 inches long, $ line wide; ligule 
very short, ciliate ; sheaths narrow, mostly shorter than the internodes. 
Inflorescence rasenane-cpliate, about one-third the length of the plant, con- 
sisting of about 5 spikes horizontal or even reflexed in age. Spikes $ to # inch 
long, of 10 to 15 spikelets, arranged in 2 rows on one side of the rachis. Spikelets 
about 3 lines long including the awns. 
Empty glumes 2, lanceolate, 1-nerved, smooth, nearly equal; body of the 
flowering glume less than 1 line long, nearly as broad, pubescent on the back, divid- 
ing into 3 lobes extended into awns ; 
Palet narrow, 2-nerved, 2-dentate at apex; imperfect flower consisting of 3 
awns on a short, smooth pedicel. 
PLATE XXXVI; a, — b, spikelet; c, empty glumes; d, flowering glume; 
é, palet ; f, imperfect flower 
- This species is closely related to B. trifida, which is somewhat larger, the empty 
glumes narrower and unequal, and the flowering glume longer and smooth, 
