More Spring Flowers

Another variety of a Spring weed - or to some of us more knowledgeable - a lovely Spring flower! I wonder what kind of flower this is? I wonder if it is native to America, or is an import? Garden variety flowers may have more beauty to some, but to me these have the beauty - and more "soul" for my eyes.

Aldo Leopold's "A SAND COUNTY ALMANAC" really gave me an appreciation for natural plants and flowers - especially the smaller, often overlooked types. Or varieties that would otherwise just be considered a weed.