148 FESTUCA GIGANTEA. 
glumes. Florets of two equal palee; exterior one of basal 
floret longer than the calyx, and five-ribbed; the imner 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. 
