Pycnoporus sanguineus is a white rot saprobic fungus. It was discovered on Guana Island (part of the Virgin Islands) but occurs throughout the tropics, usually growing on dead hardwoods. It grows in the form of a thin dry conk with a lateral attachment to its substrate, is bright orange on all surfaces with concentric zonation, and the pores on the underside are minute. It is inedible due to its tough texture.
It is also a plant pathogen infecting plane and mango trees.
P. sanguineus is used for both industrial and medicinal purposes throughout the world. A pigment extracted from the caps called cinnabarin is used in textile industries for the partial and complete de-colorization of certain dyes. Other industrial uses of this species include testing methods for wood treatment products and enzymes used in bio-remediation for the breakdown of crude oils. Traditional medicinal uses were first utilized by natives in surrounding areas[where?] of this species. Medicinal uses of P. sanguineus help relieve symptoms of the following diseases: arthritis, gout, styptic, sore throats, ulcers, tooth aches, fevers, and hemorrhages. P. sanguineus also displays numerous anti-bacterial properties against E. coli, K. pneumoniae, P. aeroginosa, S. typhi, and S. aureus by inhibiting specific metabolic pathways. Currently, P. sanguineus is being used in medicine for the absorption of certain heavy metals contained within the blood stream.