nothing else looks like them,the one in the picture is what I would say is a tight compact one but they can be more spread out and have bigger padals on them and they can range in color from almost black to different shades of grey to even light tan,they have a white underbelly.cut them off at the ground with a fillet knife so you can leave the the root system in the ground.they almost ALWAYS grow under white oaks.you can also google them and see alot of pictures