Gasteroid fruit body types are either roughly spherical or tuberous , occasionally with stipes , and usually have a peridium that is either simple or multi @-@ layered . Mature gasteroid fruit bodies generally open irregularly at maturity to expose a powdery gleba with a color ranging from white to yellow or black @-@ brown to black . Capillitia are generally absent from the gleba . Spores are spherical or nearly so , and have a surface texture that range from smooth to wart @-@ like and spiny , or sometimes with reticulations . Hyphae have clamp connections .