Bull Thistle, Circium vulgare, looks like the thorniest of the local thistles. Aren't plants just so amazing? I mean, the diversity in leaves, stems, and flowers is so incredible. Why does our world produce such variety?
This species is a biennial and reminds me of the growth pattern of mullein--first year basal rosette and second year full blown plant that we see here.
By the way, this species goes way back to one of the very first posts.