36 A-grostideae 



awns; empty glumes pubescent or ciliate, obtuse, elliptic ; awns 

 4 mm. long; flowering glume 1 nun. Long, hyaline, truncate- 

 jagged; awn equaling or shorter than the glume or wanting; 

 palea 2-toothed. 



'iion in low moist places along the coast and along streams through- 

 out our range, ascending the mount a ins to the pine 



•_'. P. littoralis Sm. Perennial, 3-6 dm. high, ascending 

 from rootstocks; sheaths nearly equaling the internodes, the 

 upper slightly inflated; leaves flat, scabrous; panicle dense, 

 somewhal Iobed, 4-8 cm. long; spikelets 2-2.5 nun. lung; awns 

 equaling tbe empty elliptic glumes; flowering glume 1 nun. 

 long, triturate, hyaline, its awn nearly twice as long; palea 

 2-toothed. 



Occasional along streams in the valleys and foothills. 



17. AGROSTTS L. Bent-gj 



Animal or perennial grasses with Hat or bristle-like 

 leaves and paniculate inflorescence. Spikelets L-flow- 

 ered. Glumes 3; the ~ outer empty, membranous, 

 keeled, acute ; the third shorter, obtuse, hyaline, some- 

 times bearing a dorsal awn, subtending a perfed flower. 

 Palea shorter than the glume, sometimes minute or 

 wanting. Stamen- generally 3. Styles short, distinct. 

 ( rrain free, enclosed in the glume. 



1. A. verticillata Vill. Perennial from slender rootstocks; 

 culms decumbent, 3-6 dm. high, often rooting from the lower 

 -heaths inflated, smooth; leaves 5-10 cm. long, 2-6 mm. 

 wide, scabrid above; panicle loosely contracted, 4-10 cm. long, 

 8-12 mm. wide; empty glumes nearly equal, obtuse, L-nerved, 

 scabrous; callus naked: flowering glume 1 mm. long, 5-toothed, 

 glabrous ; palea nearly equaling the glume. 



Conm earns In the mountains and valleys throughout our 



southern Eu 



'_'. A. asperifolia Trin. Annual: culms erect, tufted, leafy, 

 3-6 dm. high; sheaths minutely scabrid; leaves 7-r> cm. long, 

 3-5 mm. wide, scabrous; panicle interrupted, Iobed and don-.' 

 above, 10-15 cm, long; branches crowded, erect; Bpikelets 2.5-3 

 mm. long; empty glumes nearly equal, scabrous on the nerve-; 



