lOa SEA AfOSSES. 



an<l by iK'inp rovcrcd all over on lx>th sides with 

 mintitc, ol)U>ng ilots of a darker slvacie, which are 

 inavses of sjKires. This rtnij^hcning of the surf.i< c hy 

 these spore nvasses, gives the plant Ixjih its ; 

 and s|)ecific name. It is a summer an 1 



grog's on the rocks, in |kx)Is Inrtwecn ti<les. Mr. 

 Collins has (ollertecl it at Revere and Nanio-sket, 

 from J»me to .\ugiist ; Mrs. Davis, at CJloiicestcr in 

 the spring. I have found it in the summer ..i 

 Marblehead, Init not ver)* common. 



Ahi'jjioux\.rs siNX'osis, Dory. 



ThU pbnt much resembles our J^atheiia tuber- 

 Jormii in outline ami luliit of giowth, though it is 

 much thinner in sul)suncc, and gn^ws in much 

 brger clusters. Harvey sap each individual frond is 

 globose, one or two inches in diameter or larger, 

 becoming much inflated ami irregubr in outline as 

 it advances in age, and is thus often rupturetl and 

 pierced here an<l there with holes of irregular si 

 and size. The frond is mcmbranofls, thin, soft, liul 

 not ver)' tender; color, a brownish oliv. It may 



l)C found common all along the California coast, at 

 all sea-sons, growing, Pr. .Anderson says, on tips of 

 Ilaiidrys. Mrs. Hingham finds it growing on small 

 rocks and other Algx at mid-tide. Dr. Dinnick <'?i 



