BULLETTTsT 



OF THE 



Southern California Academy of Sciences 



JXTLV, lOlO. 



Volume XV. Part 2. 



COMMITTEE ON PUBLICATION 



Holdridge Ozro Collins, LL.D., Chairman 

 Anstruther Davidson, C. M., M. D. William A. Spalding 



CONTENTS 



Page 



Editorial 29 



Opuntia rubiflora -- "^"^ 



Additions to Flora of Los Angeles County, 1916. 33 



Atriplex hymenelytra and one of its habitats . 37 



Diatoms '*3 



Notes on Zauschneria ■ *' 



Annual Report of the Secretary, 1916 57 



Transactions of the Academy "1 



