This is very similar to Garland Brodiaea (B. coronaria, see above). It is somewhat taller, and distinguishable by its staminodes. These white, more or less erect, sterile stamens are flat on the margins, and held away from the true stamens, not leaning towards them as with the Garland Brodiaea. The staminodes are also slightly smaller than the true stamens, unlike those of Garland Brodiaea which are slightly longer.
This is found only in the far north of the county, and is sometimes found growing near Ithuriel’s Spear (Triteleia laxa, see below). Any temptation to confuse these two outwardly similar flowers (see the third photo) should be resisted. The growth habit is different; Triteleias have a marked umbel-like inflorescence, while the Brodiaea inflorescence is more open, and the individual flowers of Triteleias have no staminodes, that are so clearly present in the Brodiaeas.