Here's another photo from our hike at Point Reyes on 29 March 2019. I think the dominant yellow flower here is Point Reyes Blennosperma (Blennosperma nanum var. robustum). When researching this species, I learned a fun fact: Blennosperma disk flowers exude a sticky fluid that contains the pollen.
I wish I had known that before we encountered Blennosperma on our hike because I would have spent more time trying to get a better close-up photograph. But here's one image where I zoomed in — I think you can see some of the large white stamens (they look like white "dots" scattered among the disk flowers in the center) that will produce the pollen:
P.S. "Blennosperma" might seem like an odd name, but it means "slimy seed" and apparently refers to a characteristic of this species — the seeds become slimy when wet (according to the Jepson eFlora).
