16 



BULLETIN 461, U. S. DEPARTMENT OE 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 (Anthox- 

 antlium odoratum) . 



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



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



A low-growing tufted perennial : 

 hairy ; auricles none ; ligule long, 



leaves rolled in the bud; collar broad, 

 obtuse, membranous; sheaths glabrous, 

 not compressed; blades fiat, 

 the margins rough and some- 

 times sparsely hairy near the 

 base, one-fourth inch wide, 

 sharp pointed. 



This grass is easily recognized hy its 

 sweet odor, which becomes more pro- 

 nounced in drying. 



Fig. 25. — Switch-grass (Panicum virgatum). Fig. 26. — Downy brome-grass (Bro- 



mus tectorum). 

 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, 



