Extract from Wikipedia article: Crepidotus epibryus, is a species of saprophytic fungi in the family Crepidotaceae. It is commonly known as grass oysterling in the United Kingdom and is seen there in late summer and autumn.
Tiny white grass oysterling mushrooms Crepidotus epibryus(?) on grass roots in a sandy pit dug by animals, in red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2022 869, Lakeview Drive, Burleson County, Texas, 77879, United States
Underside of tiny white grass oysterling mushrooms Crepidotus epibryus(?) on grass roots in a sandy pit dug by animals, in red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2022 869, Lakeview Drive, Burleson County, Texas, 77879, United States
Details of tiny white grass oysterling mushrooms Crepidotus epibryus(?) on grass roots in a sandy pit dug by animals, in red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2022 868, Lakeview Drive, Burleson County, Texas, 77879, United States
Close-up of tiny white grass oysterling mushrooms Crepidotus epibryus(?) on grass roots in a sandy pit dug by animals, in red cedar forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2022 869, Lakeview Drive, Burleson County, Texas, 77879, United States
Spores of tiny white grass oysterling mushrooms Crepidotus epibryus(?) from grass roots (may be contaminated by other spores) collected near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2022 Spore size 7.43 - 8.09 × 4.24 - 4.79 µm, length to width ratio Q = 1.6 - 1.8.