Yesterday I decided to chance flying in and out of SFO – there is a runway closed due to construction – and to top it off, there was low visibility. So I felt a little crushed when we finally landed, thinking Ring Mountain might be shrouded in fog. But as I drove towards Marin County, the temperature went up and the sky was blue. I have already seen Calochortus tiburonensis, but it is one of my favorites, so I put it on my list to see again this year.Calochortus tiburonensis – Tiburon Mariposa Lily. Ring Mountain, Marin County – 28 May 2017.