Yup ... those are mushrooms ! .. what kind I couldn't tell you .. but I don't think this particular type has shown up on this log (ok .. aka BIG driftwood my hubby 'fished out' for me a few years ago) .. notice the lichen ? growing further south or downhill .. take your pick on the direction .. heaven knows I have no sense .. of direction that is. In any case .. nope I'm not eating them no matter how good they look .. but thrilled to have their company .. lichen,moss or 'shroommmsss !
More info --> http://www.ontariowildflower.com/moss.htm