Luke, please only suggest if you are unsure of an ID. I can't stress this enough. Particularly with these two which we have had trouble with in the past. This one is A.ulicifolia with its broader, but shorter, triangular phyllodes that have a distinct mucro. It also has seed pods which are flatter than those of A.genistifolia. Perhaps most importantly A.genistifolia has yet to be recorded from the booth ranges, or much of Namadgi at all for that matter, whilst A.ulicifolia can be quite common in this area.