No. 3. The Marine Algae of Santa Barbara County. 9 



lichens rather than algae.) 



Not represented in collections here. The greater part 

 of the species form closely adherent crusts. 



L. 



Order NEMALIE.E. 

 (Helminthocladiea?, Agardh and Harv.) 

 Nemalion Andersonii, Farlow. 

 Helminthocladia purpurea, (Setch.) 

 Scinaia furcellata, Bivona. 



= Ginanni a furcellata, Mont. 



A rare species, but widely distributed, being- found in 



most warm seas. 



M. 



Order CERAMIC. 



Ceramium diaphanum, Roth. Fronds brownish red, fila- 

 ments two to four inches high, loosely tufted. Found 

 also on the Atlantic Coasts of America and Europe. 



Ceramium rubrum, Ag. Fronds robust, dichotomous, 

 branches erect. (Several varieties.) 



Ceramium proliferum, a variety of the last above named. 



Centroceras clavulatum, Ag. 



Centroceras Eatonianum, Farlow. 



Microcladia borealis, Rujyr. 



Microcladia californica, Farlow. 



Microcladia Coulteri, Harv. 



The Microcladias (little branches), of which we 

 have three species, are among- the most abundant, and 

 most soug-ht for ornamental purposes, and occur in such 

 a variety of form aud color that it is difficult to assign 

 the different varieties to their proper places. The M. 

 borealis may be recognized by its one-sided plumose 

 appearance. 



Ptilota densa, Ag. Frond piano-compressed, two-edged, 

 decompound pinnate, pinnae opposite. 



