Ornduffia albifloraOrnduffia calthifolia is a species of plant in the Menyanthaceae family of wetland plants that is endemic to Western Australia.DescriptionThe species is a marsh inhabitant; it grows as an erect, aquatic or semiaquatic, perennial herb to a height of 0.4–1.2& m. The white flowers appear from September to December.Distribution and habitatThe species occurs in the Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain and Warren IBRA bioregions of Southwest Australia. It is found in wetlands such as freshwater lakes and swamps.