Lovely photos.. that makes a great deal of difference, at least one of the guides suggests onopordi has "the typical anvil"... well to my mind that is the malvae shape, but now I know what they are trying to portray. "squashed nail"would be perhaps more evocative of the correct shape... maybe there would be other, better, terms.
Mind you, it's a long time since I saw an anvil..
Thanks again Guy
