 The red colour of "Pycnoporus" species comes from pigments that are chemically related to phenoxazinone, including cinnabarin, tramesanguin and cinnabarinic acid.In order to identify the species of "Pycnoporus" a few characteristics must be carefully observed.To distinguish between "P. cinnabarinus" and "P. sanguineus" one must note the thickness of the pileus.