Lots of this up there, and elsewhere in Zion this year. Obviously a Lupine, but which one? Shows with blue and with white flowers, this patch being almost entirely white. On the ZNP wildflower list is: Broad-leaved Lupine Lupinus latifolius Legume Family

Closeup of the blossoms. (The leaves don't look particularly broad to me...)

Really have no idea on this one, and did not take a good overview of the plant.

Closeup of the flowers. Looks vaguely "Milkweed"ish. Zion White Mystery Flower #2

This one's a bit easier, though it was challenging to photograph. Larkspur or Delphinium Delphinium andersonii Buttercup Family

Larkspur blossom up close ...

Larkspur up close and personal, showing the private parts.

Another yellow mystery plant... sleuthed out by Wyoming Dave (thanks Dave!) Pale Agoseris Agoseris glauca Sunflower Family (Asteraceae)

Closeup of blossom - not yet fully open. Pale Agoseris