148 FESTTJCA GIGANTEA. 



glumes. Florets of two equal paleae; exterior one of basal 

 floret longer than the calyx, and five-ribbed; the inner one 

 having two green marginal ribs. Root perennial, fibrous, and 

 somewhat creeping. Length from three to four feet. 



Flowers towards the end of July, and ripens its seed at the 

 end of August. 



The illustration is from a specimen gathered by Mr. Wilson. 



