No. 12. 
MUHLENBERGIA BUCKLEYANA OScribn. (iiuhlenbergia Texana 
Buckl. not Thurb.) 
Plant annual, diffuse, spreading. 
Culms tufted at base, spreading, terete, slender, smooth, Sins below, 0) 
to 15 inches tall. 
adical leaves few and small; of culm 1 to 3, usually 2; sheaths rather loons | 
somewhat vaginate, or compressed and open, slightly scabrous: longer than intor- 
nodes; a flat or uranae scabrous on both sides, 1 to 2 inches long. 
Inflorescence an oblong, loose, spreading panicle 4 to 8 inches long; rachis ait 
branches sleidc terete, often purple, the latter mostly alternate, 1 to 3 inches long, 
ng solitary spikelets on slender pedicels 1 to 2 lines long. 
lets cndes lanceolate, 1-flowered, 1 line long; first glume ovate, acu 
cng pubescent, 1-nerved, $ line long with a very short awn; second glume 
o bt ag little oa. floral glume oblong, 2-toothed at. apex, 4 to 1 line long, — 
Geseiad) slightly pubescent on the nerves, midnerve excurrent se an awn as long” 
Pe 
as the glume; palet lanceolate, nearly acute, thin, 2-nerved, $ line 
ain narrowly obovate, rounded at apex, compressed, areaks nied 2 line 
long, falling with floral glume and palet but easily escaping. 
Puate XII; a, spikelet enlarged; 6, empty glumes; ¢, floral glume; d, pal 
Texas, New Mexico to Mexico on rocky hills, 
