The flower is yellow, like large dandelion, with pointed sepals that are longer than the petals. Then it forms a globe shaped seed head a couple of inches across:
The plant has many names salsify, goatsbeard, oyster plant. I like calling if goatsbeard, an earthy name, but salsify is more appealing. A favorite image subject, the seed head doesn’t don’t last, birds devour the seeds quickly.