57 



NOTES ON GROUP VII. 



Milium effusum. The amount of cumarin is less 

 in this than in the other species. 



NOTES ON GROUP VIII. 



Festuca ovina and its allies. The ligule is remark- 

 ably short much shorter than in Cynosurus and 

 has a pair of ears. The ears are not seen, because 

 the base of the blade is erect, and conceals them. 

 This and Cynosurus are the only grasses with the 

 eared ligule. 



Festuca sciuroides differs from ovina and its allies 

 in the following respects : 



1. All the shoots are fertile. 



2. The hair on the acute ribs is as long as the 



ribs are deep ; in Festuca ovina, the corre- 

 sponding hair is so short that it merely 

 causes roughness. 



Narrow-leaved varieties (var. angustifolia) of the 

 following species occur : 



f Easily recognised by the 



Poa pratensis, median lines and rib- 



Poa nemoralis, ( kss blade> 



Blade very thin ; ligule 

 long, and hairy on the 

 back. The bristle-like 



Agrostis canina, 



radical leaves dis- 



tinguish this from other 

 Agrostis species. 



/Yellow sheath, and eared 

 Cynosurus cnstatus^ 1 ... 

 I ligule. 



