Wildflowers seen on Indian pools hike

On the Indian Pools hike (Huntington Lake area) we saw quite a few wildflowers.  The white flowers top left are (I believe) Indian rhubarb.   I can't find the yellow ones in my guides, so any help would be appreciated. 

The Western azaleas (to the right)  were still in bloom and beautiful.  Sitting on the ground by the river, the fragrant scent was lovely. 

What a wonderful day!    

Thanks to Marianne who identified the sego lily (posted a few days ago).