No. 3. The Marine Algae of Santa Barbara County. 13 



Polysiphonia parasitica, var. dendroides, Ag. 

 " pennata, Ag. 



" senticulosa, Harv. 



" urceolata, Grev., var. patens. 



" verticil lata, Harv. 



" Woodii, Harv. 



Laurencia obtusa, Lmx. 



" pinnatifida, Lmx* 



" spectabilis, /W. rt/za? Rupr . 



" virgata, .4g\ In many varied forms; sometimes 



hard to determine. 

 Chylocladia ovalis, Hook.; var. Coulteri, Harv. 

 Chondriopsis nidifica, Harv. 

 Dasya Helena?, Farl. 

 " subsecunda, Suhr. 



T. 



Order CORALLINES. 

 Corallina officinalis, L. On rocks. 

 11 squamata, Ellis and Sol. 

 Amphiroa Orbigniana, Harv. (== A. vertebralis.) 

 ]z,m2i rubens, Lmx. 



ALPHABETICAL INDEX AND CHECK LIST. 



[Note. — The Roman figures and capital letters refer to the 

 Class and Order to which the different genera belong-, and will be 

 found to be convenient for reference. The signification of the 

 g-eneric names is given in brackets, these will often be found to give 

 material aid in determining the genus to which a plant belongs. ] 



AG ARUM (meaning- a fung-us or mushroom), III. G. 



Ag-arum Turneri, Post, and Rufir. 

 AHNFELDTIA (named for Ahnfeldt, a German botanist), 

 IV. O. 



Ahnfeldtia g-ig-artinoides, Ag. 



Ahnfeldtia plicata, Fr. 



