The feathery pappus on the groundsel seed head are ready for wind dispersal as seen at 2x in the second - place image. (discovermagazine.com)
The minute, sharply - pointed, bristly pappus hairs easily detach from the top of the «seeds» and are carried by the slightest breeze — attaching to skin, mucous membranes, and eyes where they can cause severe dermal irritation, possible respiratory manifestations, and ophthalmia. (peerj.com)
Once harvested, the fluffy pappus should be removed from the seeds. (herbazest.com)