I don’t think the subspecies is angustifolia. I think it might be angustissima-spatulata intergrade. However, I think an expert from the Herbarium should look at a dried specimen, which can be dropped off at the front desk at the Botanic Gardens here in Canberra. So at present I am calling it Dodonaea viscosa. If you need instructions on how to pressed plant specimens, you can contact me through NatureMapr. Though I always remember the story of William Dampier holding up over his head a big book full of pressed plant specimens, and wading through the surf, after his ship was wrecked.