black-eyed Susan, Thunbergia alata

Here's yet another black-eyed Susan. This one's a vine, but comes with the same color theme as others. No? Is it blind? Or am I? This is a variation on the theme, one I've only seen in the wild. This black-eyed Susan is often cultivated, where I've never seen one without the eye. I don't really know if those variations occur in that pattern. These black eyes, with or without, show up in FL, HI, and TX. Brevard Co FL, 1/27/13.