30 PHLEUM ASPERUM. 
white, the inner edge obtuse at the apex, straight and membran- 
ous. The floret consisting of two palew, the exterior one 
rough, indistinctly five-ribbed, the centre rib being hirsute on 
the upper portion. Floret a third shorter in length than the 
glumes. Filaments capillary, three in number. Anthers cloven 
at either extremity. Styles bold, two in number. Stigmas 
feathery. Seed diminutive, loose, cylindrical in form. Length 
from six to eighteen inches. 
Flowers in July, the seed becoming ripe at the commencement 
of September. 
The present species is readily distinguishable from the remain- 
der of this family by its cuneate glumes, and rough but not 
hairy keels. 
The specimen illustrated was gathered near Belfast, and con- 
tributed by Mr. Joseph Sidebotham, of Manchester. 
