RED ALG^. 229 



straggling manner, usually with long distances between 

 the divisions. Although it is an extremely variable 

 plant, it is not difficult to recognize, when once 

 known, as it contrives, in some way, to show its spe- 

 cific peculiarity, viz. : the putting out of minute lance- 

 shaped leaflets, along the edges of the long, ultimate 

 branchlets, which always stand out perpendicularly to 

 the axis of the branch. These are very much con- 

 stricted at the base, but rounded more or less at 

 the top, and are from one-sixteenth to one-half an 

 inch in length. The plant attains, in full growth, a 

 height of ten inches or more. 



Mr. Cleveland finds it, from October to May, 

 washed upon the shore from deep water, at San 

 Diego. At Santa Barbara, it is found in the same 

 situation, also growing on the rocks near shore. Dr. 

 Anderson finds it on shelving rocks and in tide pools, 

 all the year, at Santa Cruz. It is extremely common 

 everywhere. 



Prionitis Andersonii, Eaton. 



This is a much larger plant than the last. It is 

 common at Santa Cruz, but somewhat rare on other 

 parts of the coast. It was named by Prof. Eaton, 

 for that most industrious and zealous Algologist, Dr. 

 Anderson, of Santa Cruz. The plants are a foot or 



