I see what you mean. In taking a look at the pics to see what you're talking about, the ones in question may be pics that I submitted. I've grown this one as silphium perfoliatum, but, in comparison, mine indeed do not have the 'cup' effect where the leaves attach to the stem. My pics may need to be removed and I'll check to see if there is another silphium that mine may be. Took the seeds in trade...
