Trichaptum biforme

Trichaptum biforme, commonly known as the violet-pored bracket fungus, 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. 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.