This one has me totally stumped. There aren't that many tooth fungi out there, but I can't find this one anywhere. I wish I had taken better pictures. 6cm wide cap. White flesh is soft and very moist, but pliable and tough. KOH turns it tan-flesh color. Closely spaced teeth (more like hairs) are only 2mm long. Couldn't get a spore print. Growing on hardwood log in mixed forest. Any ideas?