Her big, lewd, bold eye, in its sooty lashes, And that stripped, athletic leg, hairy, In a fling of abandon—" (24-26)
The ending note of the entire poem is pretty sexy in nature, though in kind of a weird way. Speaking in terms of popular conventions about beauty (which might be for the birds, but that's another story), we usually don't think of hairy female legs as being anything particularly attractive. But there's that word "lewd," and then "stripped," and then the verb "fling," which when you're talking about legs, usually implies something sexual. So the poem ends on this kind of wild sexual note, which is exactly how the poem wants us to think of the poppy.