| Noun | 1. | genus Scleroderma - genus of poisonous fungi having hard-skinned fruiting bodies: false truffles fungus genus - includes lichen genera family Sclerodermataceae, Sclerodermataceae - a family of fungi or order Sclerodermatales with a single-layered peridium; includes earthballs earthball, hard-skinned puffball, puffball, false truffle - any of various fungi of the genus Scleroderma having hard-skinned subterranean fruiting bodies resembling truffles Scleroderma aurantium, Scleroderma citrinum - an earthball fungus that is a dingy brownish yellow and a dark purplish interior; the peridium is covered with a pattern of small warts Scleroderma flavidium, star earthball - an earthball with a smooth upper surface that is at first buried in sand; the top of the fruiting body opens up to form segments like the ray of an umbel Scleroderma bovista, smooth earthball - an earthball with a peridium that is firm dry and smooth when young but developing cracks when mature; pale orange-yellow when young and reddish brown at maturity |