VOL. II-] Plants of San Francisco. 337 



this place, near to each other, Artemisia dracicncidoides, Bif^elovia 

 vcneta Hemizonia fascicidata, Eriogonum fasciculatiim TindAtriplex 

 Nuttalliif The first belongs farther inland, and the remainder to 

 places more or less considerably removed. 



Plants which are distributed along the maritime borders of widely 

 separated countries, such as Pentaca:)ia ramosissima^ Mcsembry- 

 ajithcmitm ceqiiilaterale, Dichondra repens, etc., may perhaps always 

 have their birthplace disputed. In such cases it seems more in ac- 

 cordance Avith philosophical methods, to look for their origin in tlie 

 places where their congeners or nearest relatives abound than in 

 regions in which they are systematically aliens, even though the 

 date and means of introduction remain always unknown. 



In the list of introduced plants, only such are included as are 

 spontaneous inconsiderable numbers or at various points. It would 

 be absurd to consider the apple, peach or plum which sometimes 

 springs from an accidentally buried seed, or potatoes and corn 

 which grow on waste heaps, as naturalized plants. Eucalyptus, 

 though widely planted in the state, very rarely springs from self- 

 sown seed, but the common Acacia does so m great numbers. On 

 the nearly vertical cliffs of Telegraph Hill small fig-trees find a pre- 

 carious lodgment, but cannot reproduce themselves for the varieties 

 of fig in California do not produce perfect seeds. Many other 

 plants, such as BnigmansiUy Scarlet Sage, Roses, etc., persist for a 

 considerable time, marking the places where houses formerly stood 

 on the outskirts of the city, and if not interfered with would perhaps 

 extend themselves. 



The nomenclature and systematic arrangement of this list is for 

 obvious reasons essentially that of the *' Botany of California" of 

 the Geological Survey, but the species are usually credited to the 

 original describer whenever rectification would not involve a new 

 combination.' 



RANUNCULACE^, * 



1. Thalictrum Fendleri Engelm. var. platycarpum Torr. 



n 



Pac. R. Rep. iv. 6, in part; Trel. Proc. Bost. Soc. Nat. Hist, xxiii. 

 394, fig. 13. Mission Hills, and according to Dr. Behr,* formerly 

 on Telegraph Hill. April— June. *' Meadow Rue.'* 



2. Myosurus minimus L. spec. 407. A very small form col- 

 lected in Laurel Hill Cemetery by Dr. Kellogg. March. *' Mouse- 

 tail." 



