180 PGA COMPRESSA. 



base furnished with a delicate web suspending the calyx. Inner 

 palea having two green marginal ribs. 



Length twelve inches; colour dark green. Eoot perennial 

 and creeping. 



Flowers in the middle of July, and ripens its seed in the 

 middle of August. 



The specimen for illustration was gathered at Bristol, by 

 Mr. Joseph Sidebotham. 



