FIG. 2. The expanse of a single fungal taxa connecting a mature oak located at the 0,0 point with seedlings planted at various distances (in meters) surrounding the mature tree. Shown are two taxa, Thelephora terrestris (wide dashed lines) and Amanita sp. (narrow solid lines) based on distribution of restriction fragment length polymorphism analyses of seedling root tips (Allen and Lindahl, unpublished data, 2003).