No. 58. 



DESCHAMPSIA ELONGATA (ITook.) Munro. in Beiith. PI. Hartw. ;{4'J 

 (IS.">7); Air/i rhniiixld Hook. Fl. 15or. Amer. ii. lit:? (18-10?). 



Plant annual, tiiftod, with fibrous roots. 



Culms erect, simple, slender, smooth, naked above, 12 to IS inclies tall. 



Leaves of culm xisually 2, the first \vith a very short, open sheath and slender, in- 

 volute blade ■^ to iiiclies lon^, tin; second witli lonf;, smooth, stiiate sheatli, rather 

 loose and half open above, and a slender, inv(jlute blade I to .'5 inches lou{^; liguh' 

 membranaceous, nearly acute, 1 to 2 lines long, decurrent. 



Iiijlorcscencc a linear, strict, c^rect or slijihtly noddini;' panicle to S inches long; 

 rays mostly in twos, uncrpial, 2 indues or less lony, erect, scabrous, bearinf; 3 to 5 

 si)ikel('ts on appressed pedicels. 



Spikclets lanceolate, somewhat compiesscd, 2.t to 3 lines lonjj, 2-lhiwercd, with a 

 rudiment of a third; empty glumes nearly e(iual, lanceolate, acute, purplish above, 

 slightly hispid on the keel, 3-nerved, 2J to 3 lines long; Horal glume broadly oblong, 

 e(|ually t-toothed at the truncate apex, convex, membranaceous, smooth except the 

 few pilose hairs at the base, obscurely onervcd, 1 to li lines huig; awn arising near 

 tlie 7iiiddle, about 1 line long; ])alet broadly lance-oblong, 2- or 4-toothed at the apex, 

 slightly hisjiid on the. 2 keels; grain elliptical, yellow, ij line long; lodicules usually 

 present but small; internode of rachilla jf line long, pilose especially above. 



Plate LVIII; «, spikelet partly dissected; i, floret; c, floral glume, dorsal view. 



California, near the coast in the vicinity of Siui Francisco and nortliward to 

 Oregon. Also extending eastward to Idaho and Montana, in some localities very 

 abundant, and furnishing a eonsiilerable amount of pasturage. 



