Cirsium arvense, growing on road verge with Achillea millefolium
No shortage of this!
weedy spot along a creek
I really haven't a clue when it comes to plants. This one captured my attention with all the spiny structure.
San Diego County, California, US
Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, one of several genera known commonly as thistles. They are more accurately known as Plume thistles. These differ from other thistle genera (Carduus, Silybum and Onopordum) in having feathered hairs to their achenes. The other genera have a pappus of simple unbranched hair.