 The genera "Pisolithus", "Scleroderma" and "Calostoma" are known to be ectomycorrhizal.Phylogenetic analysis places the Sclerodermataceae in the bolete clade.Older analysis suggests that the Sclerodermataceae (including the genera "Scleroderma" and "Veligaster"), the Pisolithaceae ("Pisolithus"), the Astraeaceae ("Astraeus"), Calostomataceae ("Calostoma"), and the new families Gyroporaceae ("Gyroporus") and Boletinellaceae ("Boletinellus" and "Phlebopus"), should form a new suborder, the Sclerodermatineae.