New observations on sclerodermataceous fungi

New records and a new section are reported for the genus Scleroderma (Basid iomycotina, Sclerodermataceae). Scleroderma sinnamariense is registered for the first time from Costa Rica and is moved from section Sclerangium to se ction Scleroderma for the well developed reticulum on the spores. Scleroder ma echinatum is reported from Panama and the new section Caloderma is propo sed to accommodate it. Scleroderma meridionale is reported from Mississippi (USA). Scleroderma septentrionale is reported for first time from North Am erica. It was only known from northern Europe, and as S. macrorhizon in nor thern USA. Veligaster nitidum (Sclerodermataceae) is reported for the first time from Panama and from a new locality in Jalisco (Mexico).