Tulostoma fimbriatum is a stalked puffball (stiltball) fungus with a small, round spore sac elevated on a slender stalk, growing in dry, sandy or calcareous soils in open habitats including dunes, short grasslands, and steppes across Europe and beyond. It releases spores through an apical mouth (peristome). Classified as Endangered, this distinctive species is threatened by loss of short, open grassland habitats and sand stabilisation.