At least until they got mowed! We saw several big clumps of a leafy clustered mushroom, a polypore, a foot or so in diameter, like Hen of the Woods. However, I think it's too hot and too early for hen-of-the-woods, so this must be a look alike. They are scattered through the lawn in a vacant lot, and the day after we saw them, the lawn got mowed! I think they are eating the roots of two huge oak trees that fell down and had their stumps removed. I think it's been four years or so since those trees fell.