DUNE VEGETATION AT SAN FRANCISCO 193 



cubn of it is to be seen. A number of "town lots" have been 

 carefully planted to marram grass but without brilliant results.^ 

 When one of the pioneer plants such as Franseria or Abronia 

 is well started, other species come in and occupy some of the 

 ground thus held in place. The second comers are chiefly those 

 already named as occasional pioneers. Later arrivals are the 

 yarrow, pearly everlasting, painted cup, false dandelion, lupines, 



—^ 



Fig. 1. Strawberry (dark) and Franseria (light) on a low mound of the dune 

 area. 



Baccharis, Ericameria, California poppy, Eriogonum, Eriophyl- 

 lum, Artemisia, Polygonum paronychia and others (see systematic 

 list). 



Shrubby Plants 



Shrubby plants of the dunes are all low. Even willows do 

 not become tall except in depressions. A few of these are as 



' Marram grass has served most successfully to hold the sand in various places 

 about San Francisco. Indeed a large part of Golden Gate Park is a reclaimed 

 dune area. But continued care over a number of years is necessarj^ for establish- 

 ment of a good stand. 



