Frogleg wrote:

http://www.cnr.vt.edu/dendro/dendrol...us/sglauca.htm

Whatever it is, it climbs like crazy, is very nasty to pull out, and
seems to start in the most inaccessible places. Such a nice name for
such a noxious weed.

This is the closet match but the leaves are the wrong shape (definitely
arrow or as one book described, spade shaped) and a darker green. The
leaf shape is reminiscent of bindweed, but a much more elegant looking
leaf, more slendor, poised, mottled as if by an artist - like it went to
finishing school. g The leaves aren't waxy.

Thanks to you both - the search continues!

Kate