This common prairie wildflower, Goat’s Beard, only opens on sunny mornings. They close for the afternoon and don’t like to open on sunny or rainy days. They have long, pointy bracts (specialized leaves) surrounding the flower. The seed heads that form resemble those of dandelions, but are much larger. Tragopogon dubius, meadow salsify, salsify, Jack-go-to-bed-at-noon.