201 



Fig. 497. Trisetum wolfii Yasey, in Bot. Wheeler Exped. 6: 

 294, t. 27. 1878. Wolf's False Oat. — A slender, erect, tufted per- 

 ennial, with rather short, flat, scabrous leaves and loosely-flow- 

 ered, nodding and contracted panicles 5 to 10 cm. long. Spikelets 

 2-flowered, 5 to 6 mm. long, with lanceolate, very acute, nearly 

 equal empty glumes (a) and acute, punctate-scabrous, short- 

 awned flowering glumes (c). — Mountains of Colorado. August. 



