Tuckahoe or Indian Bread
#38 - The unlabeled, black rugby ball-shaped sample is a Tuckahoe or Indian Bread.
A Tuckahoe is a mass of fungal tissue formed on the roots of trees by Poria cocos. Little damage results from Tuckahoes on living roots; however, the fungus can cause a brown cubical butt rot in many tree species.
Known hosts are: persimmon, eucalyptus (FL, USA), Juniperus communis, Juniperus virginiana, Shortleaf Pine, Loblolly Pine, Oaks (southern USA).