A twining vine (no tendrils), smooth stems & (trifoliolate?) leaves, with small purple & mauve to white pea-type flowers.
I believe this is a different vine to that of sighting 4647773 which has hairier, longer & more narrow leaflets.
I don't believe this to be Glycine microphylla, the flowers of this sighting have variegated colouring, not the one solid colour as pictured fo Glyc. m., and have a different shape (the top line formed by the top 2 petals of this sighting has a gap at the top, the top line in CarbonAI's sp is continuous across the 2 back petals.