Need name of a flower
Please help me find the name of a flower that is similar to a buttercup but is bigger, and is a brilliant orange. I received a package of seeds labeled "wild flowers" mixture. When they came up this summer, I saw a beautiful, all orange, very bright flower that is similar to a buttercup (the only flower I can think of that it might resemble). It has only one bloom per stem and grows approximately, 6 or 9 or 12 inches high. Hope you can help me.