16 



BULLETIN 461, U. S. DEPARTMENT OF AGRICULTURE. 



ing upwards ; blades flat, glossy beneath, dull and densely pubescent above 

 and velvety to the touch, rough on the margins, one-fourth inch wide, sharp 

 pointed. 



Fig. 23. — Sweet vernal grass (Antliox- 

 anthum odoratum). 



Fig. 24. — Soft chess (Bromus hordeaceus) . 



hairy: auricles none: ligule Ions 



19. Sweet vernal grass (Anthoxanthum odoratum; fig. 23). 



A low-growing tufted perennial ; leaves rolled in the bud ; collar broad, 



obtuse, membranous ; sheaths glabrous, 

 not compressed ; blades flat, 

 the margins rough and some- 

 times sparsely hairy near the 

 base, one-fourth inch wide, 

 sharp pointed. 



This grass is easily recognized by its 

 sweet odor, which becomes more pro- 

 nounced in drying. 



Fig. 25. — Switch-grass (Panicum virgatum). Fig. 2G. — Downy brome-grass (Bro- 



mus tcctorum). 

 20. Soft chess (Bromus hordeaceus; fig. 24). 



A slender, tufted annual; leaves rolled in the bud: collar broad, with 

 wavy margins, glabrous; auricles none; ligule membranous, medium long, 



