XX GRASSES OF BRITAIN. 



of one floret. Glumes equal, frequently awned. Base of floret 

 naked, not hairy. Styles long. Stigmas long. Three genera, Alope- 

 curus, Phleum, Polypogon. 



4:th. PHALARIDEjE. — Inflorescence panicled, close, or spread- 

 ing. Spikelets of one floret. Floret awnless (or tipped with a minute 

 point), with hairs or scales at the base. Palea of equal length or 

 nearly so Glumes equal. Two genera, Phalaris, Ammophila. 



5th. AGROSTIDEtE. — Inflorescence panicled, close, or spreading. 

 Spikelets of one floret. Floret more or less hairy at the base, awned ; 

 (when the awn or hairs are wanting, the palese are very unequal, and 

 the lowermost glume the larger). Four genera, Agrostis, Anema- 

 grostiSj Calamagrostis, Gastridium. 



6ih. STIPACEjE.— Spikelets of onefloret. F/ore^ strongly awned. 

 Glumes long, hairy, taper-pointed. Two genera, Stipa, Lagurus. 



1th. MILTACETR. — Inflorescence compound-panicled, spreading. 

 Spikelets dorsally compressed, of one floret Floret not awned, 

 naked at the base. Glumes equal. One genus. Milium. 



8th. ARUNDINACE^. — Inflorescence compound-panicled, 

 spreading. Spikelets of three to five florets. Florets acute, not awned, 

 very hairy at the base. Glumes very unequal^ much shorter than 

 the florets. One genus, Arundo. 



9th. SESLERIACEiE. — Inflorescence in the form of a short oval 

 compact head. Spikelets of two to three florets. Florets toothed at 

 the summit and minutely awned, longer than the glumes, naked at 

 the base. Styles very short. Stigmas very long. One genus, 

 Sesleria. 



lOth. ANTHOXANTHACE^.— Inflorescence panicled, close. 

 Spikelets of one floret. Floret hairy, with both paleae awned. Glumes 

 very unequal. Styles very short. Stigmas very long. One genus, 

 Anthoxanthum. 



