Help Identifying Wildflowers

It's nearly as bad as the fungus obsession - this time of year - well anytime of year I see a wildflower is more accurate.  I have a semi-real goal of photographing all of the wildflowers on or around Dryad Ranch.  "Semi" in that I doubt I'll ever see them all. 

I work with four wildflower field guides, including John Muir Law's Field Guide to the Sierra Nevada.  I also spent a lot of time on the Calflora web site trying to track down what species of flora I've just photographed.  Sometimes, I can only get as close as family and then get stumped.  Sometimes I don't even get that far.  I suspect that many times I've photographed something that is non-native and therefore isn't included in any of the guides. 

The next two images show two I've gotten nowhere with.  Any ideas on where to start looking?  Both of these were found in the mostly dry creek bed that runs below the road from the ford (just past the green gate) to the Chowchilla River.