1 10 PDA MARITIMA. 



of six to ten florets; apex of basal floret stretches considerably 

 beyond the large glume of the calyx. Calyx consisting of two 

 membranous glumes, three-ribbed; inner glume nearly twice 

 the length of outer glume. Florets of two equal-sized palese; 

 exterior one of basal floret sharp-pointed, base slightly hirsute; 

 smooth above, five-ribbed. Inner palea having two green mar- 

 ginal fringed ribs. Length six to twelve inches. Root creeping 

 and perennial. 



Flowers at the beginning of July, and the seeds become ripe 

 in a month. 



P. maritima differs from P. distans in having its rachis and 

 branches smooth to the touch, its root creeping, and its central 

 rib of outer palea extending to the summit. It also differs 

 from P.procumbens in its smooth rachis and branches, and 

 creeping root. 



The specimen for illustration was gathered near Bristol, by 

 Mr. Joseph Sidebotham, of Manchester. 



