75 



No special colouring matter developed in the sheath. 

 The genus is thin and rough bladed, and long 

 liguled. The ribs are acute or rounded, and about 

 as high as broad. The ligule is white, thin, and 

 hairy on the back. Agrostis. 



Ribs very acute, about titnce as high as bi'oad, otherwise 

 very similar to Agrostis. Alopecurus. 



Alopecurus geniculatus, L. (Bent-stemmed foxtail). An 

 aquatic. 



(Alopecurus agrestis, L. (Slender foxtail). A denizen of 

 dry soils, with a thick, usually coloured, ligule. 

 Ribs very similar to Agrostis. An annual or biennial. ) 



