the author is alone to blame, his aim in this work having been to produce a 

 useful field guide for the botanists of this coast, and not a critical treatise 

 on species or varieties. 



The localities given it is hoped are numerous enough to denote in a 

 general way the rarity or frequency of the plant, its distribution and alti- 

 tudinal range. 



The time of flowering it has been thought advisable to omit, as the 

 period of the winter rains, and the altitude of the district have as marked a 

 determining influence as the aerial temperature. 



The County of Los Angeles covers 4,000 square miles of land with a 

 seacoast line of about 100 miles in length. In the land area are included 

 the coast and San Gabriel mountains (the latter reaching to an altitude of 

 6,000 feet) and the Southern section of the Mqjave Desert. The flora is in 

 consequence a varied and extensive one, and comprises a larger number of 

 species than are found in many of the Eastern States. 



The number of species and varieties listed in the first Catalogue was 

 854. In the present list the numbers are 961, divided as follows: 



Phaenogamia 934 



Filices 20 



Equisetaceae 4 



Sellaginellacese i 



Marsileacese i 



Salviniaceae i 



One new species, a hybrid of our common Audibertias, is here pub- 

 lished for the first time. 



The Botanical Section of the Academy of Sciences has in contemplation 

 the completion of the Floral list by the publication of a second part at some 

 time in the near future, when the resources of the county have been more 

 fully explored. 



ANSTRUTHER DAVIDSON, M. D., 



Los Angeles, Cal. 



July I, 1896. 



