Could you provide an estimate of the plant's height, please?? I generally agree with Michael that it's not at all typical of Hardenbergia. But I'm really not sure what this could be, doesn't look at all like a glycine sp.
It's very small, no more than about 15 cm long and perhaps 5 cm high. I thought it fit the description of G. tabacia in NSW Flora Online pretty well. However just before your comment came in I was having doubts because I forgot that G. tabacina is a scrambler and this one is definitely a twiner, as can be seen at the far left of shot. But is doesn't fir the description of G. clandestina. I look forward to any suggestions you have.
Leaves also have a pointed tip, which rules out glycine, those seedpods are bringing me back to Hardenbergia even though it's certainly not typical, but to be honest i'm not sure. Hoping you have some inspiration @MichaelMulvaney :)
Jane Russell recorded this species in Aranda Bushland Kennedia rubicunda (Dusky Coral Pea) Not sure how it got to the Pinnacle possibly may be local to the Canberra region or moved in a PCS vehicle or other vehicle moving between the two reserves.
Yes thanks Michael - what a memory! There are some small inconsistencies such as leaf size and hairiness and size of the pods, but some of that could just be that it's a very young plant or, perhaps, given that it is a nursery plant, it could be a hybrid (?). As for how it got there, given that you have shown that Gang gangs eat just about anything and they were frequenting the the gardens of Hawker several streets off the reserve last year, I reckon birds are a possible source. There are mature eucalypts around where I found it. [As an aside, it works in reverse, too - I have a Cassinia quinquefaria in my garden that can only have been "planted" by birds and the most likely source is the reserve. I wish they'd planted a C. longifolia instead, which has much nicer flowers :-) ]
Pretty clearly Glycine tabacina upon review, the seed pods are not nearly hairy enough for it to be K.rubicunda (believe me I’m seeing a lot of that right now). Idk what my nonsense was with the sharped tipped leaves, that’s simply not true.