Laguna Racine ilaboratorp 209 



GIGARTINACEAE 

 Endocladia muricata (P. and R.) J. Ag. 



(Figure 115) 



Common on rocks near high tide mark. Length of plant common- 

 ly 2 cm., diameter of stem .4 mm. 



Chondrus canaliculatus (Ag.) Grev. 

 Common on the rocks of the middle tidal zone. 



Gigartina canaliculata Harv. 

 With the above. 



Gigartina spinosa (Kuetz) J. Ag. 

 Gigartina exasperata Harv. and Baill. 



Gigartina horrida Farlovv 



The above three species are frequent on rocks of the lower tidal 

 zone. 



Gigartina microphylla Harv. 

 Specimens of this species frequent in the wrack along the beaches. 



Stenogramma interruptum (Ag.) Mont. 



Occasional in beach wrack. Dr. Setchell expresses doubt as to 

 this determination. 



SPHAEROCOCCACEAE 



Hypnea sp. 

 Epiphytic on other algae throughout the tidal zone. 



RHODYMENIACEAE 



Cordylecladia andersonii Grunow 

 Frequent on rocks between tides. 



Chrysemenia pseudodichotoma Farlow 

 Occasional in beach wrack. 



Plocamium coccineum (Huds.) Lyngb 



Frequent on the rocks of the lower tidal zone, and abundant in 

 the beach wrack. This is the common "red sea-moss" of the South- 

 ern California coast. Collectors will find it growing most abund- 

 antly and in finest specimens on the under side of rocky ledges of 

 the lower tidal zone. 



DELESSERIACEAE 



Nitophyllum violaceum J. Ag. var. crispulum. 

 Epiphytic on other algae of the lower tidal zone. 



