the spear thistle, bull thistle, or common thistle cirsium vulgare. thistledown, a method of seed dispersal by wind. the tiny s

august autumn background beautiful bloom blossom botany bull cirsium closeup color common countryside decoration dispersal dry faded fall field flora floral flower flowers fluff fluffy forest fresh garden gardening grass herb invasive leaf light meadow method natural nature park plant scene seed spear spring state summer thistle thistledown tiny vulgare wind wisconsin