Ranunculaceae | thimbleweed/windflower
Ranunculaceae | white baneberry/doll's eyes
Beriberidaceae | twinleaf
Can be Papaver fugax?
somewhat common poppy in the dry creekbed at Pinnacles; perhaps Eschscholzia caespitosa
at top of Mt. Sutro (in full sun)
This vine looks like several in the group of Clematis commonly called American Snowbells.
Ranunculales is an order of flowering plants. Of necessity it contains the family Ranunculaceae, the buttercup family, because the name of the order is based on the name of a genus in that family. Ranunculales belongs to a paraphyletic group known as the basal eudicots. It is the most basal clade in this group; in other words, it is sister to the remaining eudicots. Widely known members include poppies, barberries, and buttercups.