San Francisco and the Greater Bay Area Gallery 3 of 3 Images listed in alphabetical order by genus
 

Pedicularis densiflorus
 
Rosa
 
Scrofularia californica
 
Scrofularia californica
 
Scrofularia californica
         

Silybyum marianumn
 
Smilacina racemosa
var amplexicaulis
 
Stachys ajugoides rigida
 
Umbellularia californica
 
Umbellularia californica
         

Urtica dioica
 
Urtica dioica
 
Usnea
 
Vinca major