8 Bulletin Santa Barbara Society of Natural History. Vol. 1. 



the Fucaceae, of which at least 150 species have been 

 described. Fronds attached by a disk having- branch- 

 ing- stems, leaves with a midrib and distinctly stalked 

 ^ air bladders. (Farlow.) 



Sargassum piluliferum, Arg. 



Halidris osmundacea, Harv. "Sea Oak." 



Egregia Menziesii, Ag. Two varieties. 



I. 



Order DICTYOTE^E, 

 Dictyota Kunthii, Ag. 

 Zonaria Tournifortii, Ag. 



Two other species of this genus, Z. interrupta and Z. 

 lobata, have been credited to Southern California and 

 are liable to be found in this county, as well as the 

 allied genera Padina and Taonia. 



In this Order of plants three kinds of reproductive 

 organs are known — antheridia, spores, and tetraspores. 

 The species are olive-brown and form expanded mem- 

 branous fronds. 



CLASS IV. RHODOPHYCEiB. (Florideae.) 

 (Brown Algae.) 



J. 



Order PORPHYRE^. 



Porphyra vulgaris, Harv. "Laver." 



— Porfihyra laciniata, Ag. ; P. linearis, Grev. 

 Common on stones near low-water mark. Found in 

 all parts of the world. In some countries it is used for 

 making soups; the Chinese esteem it highly for that 

 purpose. 



Bangia vermicularis, Harv. Fronds gelatinous, simple, 

 filamentous, cylindrical, densely tufted. 



n. 



Order SQUAMARIE^E. 

 (A small Order the species of which inhabit resemble 



