120 SEA .SfOSSES, 



seen. It groM*s in great abundance, at low tide and 

 below, on rocks, along the whole California coast. 

 Mr. Clevcbnd sap it is washed up from deep 

 water, and lies in great heaps on the beach, near 

 the Mexican boundary' of Southern California. 



DrSMAREJmA MTIFRONS,* KlTTZ. 



Tliis plant seems to occupy a middle ground l>e- 

 twecn D. acuUata and D, liguiata^ having branches 

 shorter ancl wider and less numerous than the former, 

 and much narrower and thicker than the btter. 

 'Pie branching is alternate, like that of I), acuUatii^ 

 and the scconciary l>ranches have the same remote 

 alternate sharp spines of that species. I . ihc frag- 

 ment of a plant Ixrfore me, which is about six 

 inches long, the stem is one-tenth of an inch wide, 

 priniary and secondary branches about the same. 

 Both main stem and primary branches appear under 

 the lens to be '* midribed," It is not a very rare 

 plant at Santa Crux and in the north of California, 

 but grows at low- tide m.irk, on the rocks, at all 

 seasons. At Santa lUrbara it is very rare, and has 

 not yet been found at San Diego. 



• I . -A»i«k(iood. 



