Without leaves or stems rooting (or not) at leaf nodes, I cannot be sure if it is even Glycine, let alone a species of Glycine that is extremely uncommon in the ACT and tablelands.
From the fact that the side veins are at an angle I am fairly sure this is clandestina. The smaller veins in microphylla are net-like. On the other hand it does not appear to be twining. Is it rooting at the nodes (microphylla), ot not (microphylla)?