Often thought to be an introduced weed, this Geranium is apparently Australian. It is one of the few native herbs that thrive in disturbed weedy areas and is reasonably common along the creek.
Read more about and see more of this plant at the Flora of Victoria web site.
Read more about and see more of this plant at the VicVeg Online web site.
Read more about and see more of this plant at the Atlas of Living Australia web site.
Or find even more information about this plant at the Google web site.