JaLynn, there wasn't any info on it at the arboretum where I took the picture. With some searching on the web though, I believe it's Aristolochia ringens or 'Gaping Dutchman's Pipe'. Native to Brazil or thereabouts. A very strange looking flower indeed.
We don’t make art to show someone what something looks like. All this requires is eyes (or a lens). Art is supposed to have meaning, emotion, power, or magic. Alan & Mario "FourThirds"