RED ALG^. 231 



from the old genus, Schizymenia, to make this new 

 genus of. 



It has no stalk, but expands upwards into the 

 wedge-shaped base of the broad, thickish membrane. 

 The one before me, kindly lent by Prof. Eaton, is 

 not more than five inches long, but is quite two 

 inches wide at its widest part, tapering to a rounded 

 point at the top. The membrane is simple, but 

 more or less torn. The color is a dark purple, 

 darker in drying. 



It is not very common at Santa Cruz, growing on 

 rocks and weeds, on rocky beaches. It is not else- 

 where reported in Cahfornia, and it does not occur 

 at all on our eastern coast, though its generic con- 

 gener, S. edulis, is common enough on the west coast 

 of Europe. 



Qierwis.— GRATELOUPIA* Ag. 



Grateloupia cutleri^, Kutz. 



This is a large, coarse, flat, extremely variable 

 plant, quite common on the California coast, except 

 in the extreme south, where Mr. Cleveland sets it 



* Grateloupia. Named for Dr. Grateloup, a French Algologist. 



