No. 14. 

 MUHLENBERG I A SCHAFFNERI Fourn. 



Plant low, annual or short-lived perennial. 



Culms tufted, procumbent or spreading, branching freely, 2 to 4 inches tall 



Leaves: radical, few and small; of culm 3 to 5; sheaths compressed open 

 striate, scabrous on both sides, margins white, * to 1 inch long; ligule membrana- 

 ceous, lacerate, f line long, decurrent in prominent hyaline margins on the sheath 



Inflorescence a narrow contracted panicle, 1 to 2 inches long, often included at 

 base, rachis and branches angular, hispid. 



Spikelets.sessile, appressed, narrow, l|to2 lines long; first glume lanceolate, the 

 apex lobed, with 2 short unequal or nearly equal teeth at apex, hispid, 2-nerved her- 

 baceous, rigid, 1 to 1* lines long; second glume linear-lanceolate, acute, cari'nate 

 short-awned at apex, hispid, 1-nerved, 1* to 2* lines long, including awn; floral 

 glume ovate, 2 minute hyaline teeth at apex, slightly hispid, ciliate below, 3-nerved 

 with slender awn f to 2 lines long, or sometimes awnless; palet ovate, acute' 

 2-nerved, thin, smooth, 1£ to 1| lines long. 



Grain narrowly cylindrical, reddish amber color, | line long, falling with palet 

 and glume but easily escaping. 



Plate XIV No. 2, lower figure; a, first empty glume; b, second empty 

 glume; c, floral glume; d, palet. 



Arizona. 



No. 14. 

 . MUHLENBERGIA DEPAUPERATA Scrib. 



Plant low, tufted, annual or short lived perennial. 



Culms spreading, branching at each node. 3 to 4 inches tall. 



Leaves; radical, few or none; of culm 2 to 4, with loose, smooth, broad open 

 sheaths, and short folded or involute blades; ligule membranaceous, lacerate de- 

 current. 



Inflorescence a narrow, contracted, rather close panicle, 2 to 3 inches long 

 usually included below, rachis and branches angular, hispid, pedicels short 



Spikelets narrow, 1-flowered, U to 2 lines long; first glume ovate, obliquely 

 2-toot bed at apex, scanous, minutely hispid, obscurely 1-nerved, £ to 1 line long- 

 second glume lanceolate, narrowing at apex to a slender, awn-like point scarious 

 minutely hispid, 1 to lilineslong; floral glume narrowly lanceolate, with 2 minute 

 teeth at apex, rounded on back, hispid. 3-nerved, H to 2 lines long, midnerve 

 excurrent m an awn 2 to 5 lines long; palet lanceolate, acuminate, rounded envel- 

 oping gram, minutely pubescent, 2-nerved, U to If lines long. 



Grain narrowly cylindrical, reddish-amber, lighter above, 1 line long, falling 

 with palet and glume but easily escaping. & 



Plate XIV, No. 1, upper figure; a, spikelet enlarged; b, empty glumes; c, 

 floral glume; rl, palet. * 



Very close to M. Schaffneri and perhaps but a variety of it. 

 Arizona. 



