94 KOELERIA CRISTATA. 



a short jagged ligule. Joints near the base smooth. Inflores- 

 cence simple-panicled, compact and silvery in appearance. 

 Panicle upright, oval; sometimes two inches in length, inter- 

 rupted near the base. Branches arranged in pairs on the 

 rachis, close until in flower, then spreading. Spikelets com- 

 pressed, consisting of two awnless florets, which do not extend 

 beyond the glumes of the calyx. Calyx of two acute unequal- 

 sized glumes, with dentate keels; uppermost glume three-ribbed. 

 Florets of two equal-sized palea?. Inner palea cloven at the 

 apex; second floret having a lengthy downy footstalk. Length 

 from three to six inches. Root perennial, forming dense tufts 

 of lengthy downy fibres. 



Flowers towards the end of June, and ripens its seed at the 

 end of August. 



The specimen for illustration was gathered at Castleton, by 

 Mr. Joseph Sidebotham. 



