I found it in a forest near my house. The cap shape is uplifted. The cap margin is undulating. The cap surface is smooth. There is no partial veil feature. It is seceding attach to the cap with close spacing. The stem is locate in the center, and flexuous. I think it is a gilled muchroom, it looks similar to Russula sp, but the stem of my mushroom is thinner than Russuar sp.
