George, the flowers appear identical to trumpet vine; the leaves on mine, however, aren't nearly that glossy. The size appears right though; mine has two different kinds of leaves, some are fairly big leaflets and others are pretty small and puckered, as though they were infested with aphids but aren't. I don't know why the two different leaves grow -- that is, what stimulates the plant to grow one versus the other. Appears to be random.
Thanks for the input, Scarlet Trumpet Vine http://plantsdatabase.com/go/49881/ looks like the right one. Yellow throat really seems to match and the leaves look close, too. This has been growing over my fence from an absentee neighbors house. It is taking over the back corner of the fence, but in a beautiful way.