Dandelion clock, Taraxacum officinale.

Dandelion clock, Taraxacum officinale, Seedhead against blue sky with individual seeds dispersed by wind on a pappus of fine hairs.

Globe Thistle, Echinops bannaticus.

Dandelion clock, Taraxacum officinale.

Studio shot of thistle-like flowers of Arctium lappa, Greater burdock, on a leafy syem against a white background.