I have no idea what kind of flower this is, but I am completely smitten by it. My neighbor at the end of the street has a corner lot with a southern exposure. Before she bought the house, it was just an ordinary house with a very plain yard, but once she got her hands on it, she transformed the whole thing into a place of sheer beauty. She started small: a rock here, a tree there, a flowering shrub over there, but she kept adding and changing and adding some more until the whole place just blossomed. Every season at her house is gorgeous. She gets the first crocuses of the spring with that southern exposure of hers, and every year in the summer she amazes me with some new plant. Every year I think surely she can't fit one more thing in her yard, but by golly if she doesn't always find space to squeeze in one more new thing. I don't know how she does it! This year she has added this flower.
Look at the buds!
And the foliage! It twists and curls and looks almost like a sea shell.