PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Third Series 

 Botany Vol. II, No. 6 



An Account of the Species of Porphyra 



Found on the Pacific Coast of 



North America 



BY 



Hf.nri T. a. Hus 



With Three Plates 



Issued January ./, 1902 



SAN FRANCISCO 



Published bv the Academy 



1902 



