RED ALG^. 219 



an inch wide, and the extreme ends are notched in, 

 not unlike those of the Euthora cristata. 



Agardh takes notice that the whole plant resembles 

 some forms of that species. I am not informed 

 whether or not they are commonly found larger than 

 those in ray herbarium. These are two inches high, 

 and about three inches wide. The color is a bright 

 rose red, and the substance thin and delicate, adher- 

 ing well to paper. It is a common plant at all 

 seasons, north of Santa Barbara, and grows between 

 tides and below, on other Algae. 



Genus.— GIGARTINA* Lam. 



This genus, which has several large and showy 

 species on the Pacific coast, and in other parts of 

 the world, has but one, rather humble and insignificant 

 representative, on our eastern shores. 



The fronds of the Pacific plants are inclined to 

 be thick, fleshy and bulky ; and all the species show, 

 in some form, the presence of the papillose or tuber- 

 culose processes, which characterize, and give the 

 genus its name. The plants are of a decidedly 

 gelatinous substance, and one can readily see, that 



• Gigartina = Grape stones, referring to fruit-beariug tubercles on the frond. 



