230 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



39. Porella rivularis (Nees) Trevis. 



The correct name for this species seems to be P. cordozana 

 (Hiiben.) Evans. 38 



The additions and subtractions recorded in the preceding 

 notes represent a net addition of 16 species to the flora of 

 California since the date of Howe's work. The total number 

 of species now known from the state is thus increased to 101. 



"See Bryologist 22: 72. 1919. 



