Raoulia monroi or fan-leaved mat daisy is endemic to the South Island, where it is found in Nelson, Marlborough, Canterbury and Otago from sea-level to 1000m asl. It grows in lowland to upland open ground and rocky places, on river terraces and stabilised river gravel.  It is a prostrate, creeping  species with rooting stems that form close to open flat patches of 10cm across. This small species is rather unusual amongst raoulias because of the way its leaves are arranged on one plane on its branchlets giving it the fan-like appearance.  It has very small creamy flowers from October to November. As a lowland to montane species of dry, open ground this species is vulnerable to compeition from taller, more aggressive weed species. Although exact details are not yet available there is some evidence that suggests this species has been lost from some parts of its range and is actively declining in others.