It's a twiner and the leaves have only 3 leaflets so it's definitely not Lotus australis. It looks like and fits the description of Glycine clandestina - according to the Flora of NSW the 'standard' petal of the flowers can be to 1 cm long.
Describe how you intend to use these images and/or audio files and your request will be sent to the author for consideration.
Your request has been successfully submitted to the author for consideration.
1,908,116 sightings of 21,397 species from 13,197 contributors CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.