No. 37, 
TRIODIA PULCHELLA H.B. kK. (Uralepis pulchella Kth.) 
‘Plant a low, tufted perennial, with bulbous base, arising froma slender creep- 
ing rootstock. 
Culms spreading, fasciculately branched, at the extremity of long, naked inter- 
nodes. 
Leaves; radical and of culm alike, numerous, clustered at the base, and around. 
the fascicles of branches leaving the internodes naked; sheaths short, open, taper- 
ing, scarious; blades narrow, folded and involute; ligule a minute fringe, decurrent 
down the membranaceous margin of the sheath. 
Inflorescence, small clusters of light-colored spikelets terminating the short 
clustered branches 
Spikelets janceslate, compressed, 7- to 10-flowered, 2 lines wide, 3 to 4 lines long; 
internode of rachilla articulate below, 4 line long; first glume lance-ovate, acumi- 
nate, carinate, hyaline, smooth, 1-nerved, 2 to 2$ lines long; second glume same 
but $ line longer; floral glume oblong, 2 lines long, cleft above half way to base or 
more, making 2 long narrow margined lobes, between which the midrib is extended 
as an awn longer than the lobes, 2 lateral nerves nearly marginal, profusely ciliate, 
pubescent below; palet oblong, truncate, thin, pubescent below, and on the 2 keels. 
Grain pear shaped, translucent, light yellowish color, with opaque, brownish 
base 4 line long. 
PLATE XXXVII; 1, young plant; 2, plant in flower; 3, at maturity; a, spikelet; 
b, empty glumes; ¢, floral glume, dorsal and side views; d, palet. 
Texas to California and Mexico. 
