Hi Chris,
Great photo! That looks like Uropappus lindleyi (common name “Silver Puffs”) – an annual forb native to California.
You can check out the details here:
http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Uropappus+lindleyi
As summer approaches, its great to see how elevation affects the flowering period for our native forbs and shrubs. Keep taking those photos!