SPECIES OF ALG^. 73 



Iig. GLOeOCAPSA, 



These forms have been divided into as many species as there 

 are different colors to the cells or to the integument; they are green, 

 red, black, brown, coppery, orange, yellow, olive, purple or colorless. 

 They have no value as distinct plants, being phases or stages of de- 

 velopment of higher Algae. Mr. Wolle considers them to be spores 

 or macrogonidia, of Sirosiphon . 331 



120. APHANOCAPSA. 



§ Submerged; thallus globose . Grevillei, 333 



§ On wet rocks; thallus expanded virescens, 333 



121. CHROOCOCCUS. 



a. Cell contents bright bluish, becoming brownish; 13-25// diam. 



turgidus, 334 

 a. " " reddish or yellowish brown; i2-i6/< diam. 



rwfescens, 335 

 a. " " blue green; 3-6// diam. cohxrens, 335 



