58 AGROSTIS SETACEA. 



three. Anthers cloven at either extremity. Length from eight 

 to fifteen inches. 



Flowers in July, and ripens its seed at the beginning of 

 September. 



It is readily distinguished from other species. Agrostis vul- 

 garis 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. Kalfs. 



