I noticed this tiny fungi in the front yard while walking. The shadow from the Magnolia leaves kept sweeping across it. That's a Centipede grass blade across it, to give perspective.
Fasinating, looks like an Earthstar, Earthstar fungus has a friendly relationship with a variety of different trees, including pine and oak, as the fungus helps the trees absorb phosphorus and other elements from the earth. As the tree photosynthesizes, it shares carbohydrates with the fungus.