I have a vine, once growing on the two sides of a trellis, that I can't identify.   It's planted in full sun and grows up the trellis quickly, yet doesn't spread into the yard.  It bloomed small fragrant white flowers the first year we moved into our house, sometime near winter (not sure if it was late fall or early spring).  The plant was heavily overgrown when we moved in.  When we cut it back (leaving only about a foot of the woody stem) only one plant survived.  It has never flowered as a single plant over the last four years.  I believe the leaves are linear, untoothed, and palmately compound.  Each cluster grows 5-7 leaves, though I think more may grow as it matures (just cut it back 2 months ago so the pictures are of all new, recent growth).  The plant stays green year-round.  I have never found it in local garden/nursery shops.    I want to know what it is so I can plant one on the other side.  It's a fantastic, beautiful vine.  Please help.