The Basalt Peppercress Lepidium hyssopifolium is a small perennial herb endemic to south-eastern Australia, where it occurs in New South Wales, Victoria and Tasmania. There is little information on the previous distribution and abundance of the species, but its decline almost certainly relates to the widespread degradation and loss of grassland and grassy woodland habitats in south-eastern Australia. The Basalt Peppercress is currently known from about 35 populations containing about 1,700 plants. Current threats include grazing, competition and weed invasion, and habitat disturbance and destruction. The species is listed as Endangered under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999. This national Recovery Plan for the Basalt Peppercress is the first recovery plan for the species, and details its distribution, habitat, threats and recovery objectives and actions necessary to ensure its long-term survival.