woody-root woodsorrel

Oxalis perennans, known as native oxalis, native sorrel or grassland wood-sorrel, is a species of flowering plant in the wood sorrel family Oxalidaceae. A small yellow-flowered perennial herb with a stout taproot and three-parted leaves, it is native plant to Australia, where it grows in every state and in the Northern Territory. It is also recorded in New Zealand, where it is regarded as introduced.