Look like morels to me, we pick them in the early spring under cottonwoods groves on the wet side of the Cascades, spring, summer and fall in burned over coniferous forests on the east side of the Cascades all the way to the eastern front of the Rockies near Browning, Montana. One of the best finds in the spring time.
Go to your library and get "The Savory Wild Mushroom", best book on the subject of mushrooms. It will teach you how to figure out what you have and there are recipes in the back.[size=x-large]Do not eat unless you are one hundred percent sure, you can dry them or freeze them until you figure that out..[/size] If I found those I would go back and pick, pick, pick! Leave about 10% so they can shed their spores to the wind for next spring's crop!
Google morel or got to www (dot) morels (dot) com
If you have a food dehydrator they dehydrate nicely. Send me some when they are dry! (Just kidding, then again maybe not!)
Kind Regards,
Steve