NO. 2 DAWSON : MARINE RED ALGAE OF PACIFIC MEXICO 289 



2. Segments mostly 2.0-2.5 mm. wide and ± uniform in width 

 in middle and lower parts . . . . C. gardneri 



3. Thalli attached by small discs from the under surfaces of 

 prostrate, membranous branches . . . C. phyllohaptera 



3. Thalli not so attached, the erect blades narrowed at the base 

 to a thickened, ± stipe-like part attached by a simple disc . 4 

 4. Branching dichotomous throughout; margins entire . . 5 

 4. Branching in part pinnate or pseudo-pinnate; margins not 



entire 6 



5. Branching strict; terminal segments long; cystocarps non- 

 rostrate C. obtusifolin 



5. Branching divaricate; terminal segments short; cystocarps ros- 

 trate C. dissecta 



6. Margins of primary branches provided with simple, stalked, 

 secondary pinnae arising from minute marginal dentations; 



cystocarps non-rostrate C. pinnata 



6. Margins not as above 7 



7. Cystocarps rostrate, 1.0-1.5 (2.5) mm. in diameter; segments 

 mostly 0.5-1.5 cm. broad . . . . C. megalocarpa 



7. Cystocarps non-rostrate, 0.6-1.2 (1.5) mm. in diameter; seg- 

 ments mostly 1-7 mm. broad C. violacea 



GallophylHs acrocarpa Setchell 

 PL 25, fig. 71 



Setchell 1923, p. 398. 



Type: Holotype designated as sheet 150912 in the Herbarium of 

 the University of California, Berkeley. It bears a cystocarpic and a 

 tetrasporic plant collected by Mrs. M. Tuttle in 1888-1889. 



Type locality: Santa Cruz, California. 



Callophyllis crassifolia Setchell & Swezy 

 PI. 26, fig. 73 



Setchell 1923, p. 398; Smith 1944, p. 250. 



Type: Holotype is a cystocarpic specimen collected by Mrs. J. M. 

 Weeks, No. 87, Sept. 24, 1896, on sheet 92800 in the Herbarium of the 

 University of California, Berkeley. 



Type locality: Setchell gives "Pacific Grove, California" al- 

 though no locality is indicated on the specimen. 



This name has been reduced by Doty (1947) as representing only a 

 thick form of Callophyllis marginifructa which he in turn reduces under 

 C. -flabellulata. 



