For an introduction to the Australian bush without the risk, the National Arboretum Canberra is a great spot to learn about the flora of the land down under on foot. It’s not a spot for a lengthy run, but there are two decent 2k circuits that make for a nice quick tour of the trees. The Dairy Farmers Hill circuit starts at the main car park and traverses nine different forests. The Himalayan Cedar Trail also includes a sculpture park, and is particularly nice in autumn when the Persian Ironwoods change color. For a longer run, the dirt Boundary Road which encircles the Arboretum border can be tacked on. (It also leads to some longer trails in the Molongo area).