I didn't think they propagated this way, we will see what ya'll say about this. I got a green striped mushroom from someone that was attched to a tiny tiny tiny piece of LR. I glued the mushroom to a larger piece of live rock that was already in my tank. About an inch away from the mushroom a baby mushroom of the same kind is starting to grow and about 1/2 inch from that baby another baby is starting to grow, they are both about the size of a pencil eraser. I thought the only way they propagate was sither they split or I had to split them to make them grow another one. Enlighten me.