Angel Wings?

A beautifully pale fungus near the summit of Mt Webster. I'm told this is "Pleurotus porrigens or something very closely allied. It's in the oyster family and I think this one is commonly called Angel Wings." Another source adds that it "definitely looks like an oyster, but I wouldn't be sure without holding it 4 inches from my face for 10 minutes or so. A simple nibble will tell if it's an oyster or Lentinellus ursinus, which I'm sure anyone would promptly spit out." September 2006