Trichaptum biforme, commonly known as the violet-pored bracket fungus,[1] purple tooth, or violet toothed polypore, is a species of poroid fungus in the order Hymenochaetales. It is a saprobe that decomposes hardwood stumps and logs. It has a violet colored edge that fades with age. It is inedible.[2] It is widely distributed and occurs on at least 65 tree hosts, but rarely on conifers. It is sometimes confused with Trichaptum abietinum, which grows almost exclusively on conifers.[3]