Funguses have a remarkable power of re-forming such parts of their substance as have been accidentally or otherwise removed. Vittadini found that when the tubes of a Boletus were cut out from a growing plant, they were after a time reproduced. Where deep holes have been eaten into these plants by snails, such holes, on the Boletus attaining to its full growth, are partially refilled. If the tender Polyporus be cut across, the wound immediately sets about healing by the first intention, leaving not even a cicatrice to mark the original seat of the injury. The Lycoperdons (Bovista), which are often accidentally wounded by the scythe, have the same faculty of repairing the injury, remodelling afresh the parts that may have been excised from them.[39]