112 POA PROCUMBEN8. 



Distinguished from Poa maritima in its annual fibrous root, in the 

 rough rachis and branches, broad flat leaves, and in the greater length 

 of the central rib of the outer palea. From P. distans in the compact 

 panicle, the unilateral branches, in never being deflexed, and in the 

 dorsal rib of outer palea stretching beyond the summit. 



P. rigida, and also P. loliacea cannot be mistaken for it on account 

 of their having acute glumes, destitute of lateral ribs. 



The specimen for illustration was gathered at Blackpool, by Mr. 

 Joseph Sidebotham, of Manchester. 



