68 AGROSTIS SETACEA. 



It is readily distinguished from other species. Agrostis vulgaris 

 has stem and sheaths smooth, and inner palea half the length of outer 

 one. A. alba has mostly no awn, and the leaves from the root are 

 not setaceous. A. canina has smooth leaves and sheaths, and no 

 inner palea. 



The illustration is from a specimen gathered at Penzance, by Mr. 

 J. Ralfs. 



