Smaller, hairier and grayer than T.
violet on edge. White rotter on conifers. “Violet-toothed
very similar to Trichaptum biformis,
but is slightly smaller. The top of this annual fruiting body is a
grayish-white, sometimes zoned hairy
polypore cap. Often the caps are dressed in algae growth.
Beneath some of the pores expand and break into spines. Thin
of the hymenium is purple. Inner section is cream becoming
brownish-yellow. It fruits on dead conifers.