Flax-flowered Linanthus, Linanthus liniflorus

aka Narrow-flower Flaxflower (Calphotos.org), Leptosiphon liniflorus, CA native.
Polemoniaceae, Phlox family; formerly classified in genus Linanthus.

"Flax-flowered Linanthus" is the name used by the Edgewood Preserve cognescenti.

No longer a true Linanthus-- the genus has recently been split, with many of the species
formerly included now transferred to the genus Leptosiphon (Jepson Manual).

"Linanthus" is from the Greek for "flax flower", the flowers superficially resembling those of flax.