Jane pointed out how the petals look like little windmills, hence the name. I hope I'm not showing off my ignorance too much, but I wonder if those round structures on the stem below the flowers are buds or seeds. Which direction do these flowers bloom? From the bottom up, or from the top down? My orchids bloom from the bottom up, and my columbine blooms from the top down - two very different kinds of plants. Caryophyllaceae is a new family on Nature ID. Jepson's calls it the pink family, but the Styers refer to it as the carnation family.