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Pycnoporus cinnabarinus
Semicircular to kidney-shaped; planoconvex; 2-13 cm across; up to 2 cm thick; upper surface finely hairy to suedelike, becoming roughened or nearly smooth (often pocked in age), bright reddish orange to dull orangish with age; undersurface bright reddish orange, with 2-4 round to angular (or sometimes slot-like) pores per mm, occasionally extending onto the substrate below the cap; tubes to 5 mm deep; stem absent; flesh tough, reddish to pale orange.
Saprobic on the dead wood of hardwoods (usually with bark still adnate) and rarely on the wood of conifers; causing a white rot; annual; spring through fall, or over winter in warm climates; widely distributed in North America.
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