These two species are often hard to separate because of the confusing range for the macrocharacters which overlap. C. perennis seems to be the more cinnamon of the two, but not always! The width of the spores is a good microcharacter.
Cap 1-5 cm, vivid reddish brown (rusty aging amber) to dark brown aging wood brown; Zoned but somewhat blurred by radially fibrillose matted fibers, edges of zones often diffuse; Center flat to depressed, margin paper thin and hairy (ragged looking).
Pores reddish brown aging tan, not decurrent on stalk.
Spores 6.5-7.5 × 4.5-6.5 um (Hansen & Knudsen, 1997)
Cap 2-13 cm, whitish tan, soft orangish brown, yellow brown (golden cinnamon) to dark brown aging grayish; Distinctly zoned with sharp edges; Radially fibrillose or appressed velutinate surface; Center flat to depressed, margin thin and rounded.
Pores grayish brown aging tan, normally decurrent on stalk.
Spores 6.5-9 × 3.5-5 um (Hansen & Knudsen, 1997)
Bernicchia, Annarosa. 2005. Polyporaceae s.l. Fungi Europaei Vol. 10. Edizioni Candusso, Alassio, Italy. 806p.
Bessette, A., A. Bessette and D. Fischer 1997. Mushrooms of Northeastern North America. Syracuse University Press, Syracuse, NY. 582p.
Gilbertson, R. L. and L. Ryvarden. 1986. North American Polypores Vol. 1. Fungiflora, Oslo, Norway. 433p.
Hanson, Lise and Henning Knudsen. 1997. Nordic Macromycetes Vol. 3: Heterobasidioid, Aphyllophoroid and Gastromycetoid Basidiomycetes. Nordsvamp Pub., Copenhagen, Denmark. 444p.
Overholts, L. O. 1967. The Polyporaceae of the United States, Alaska and Canada. Univ. of Michigan Press, Ann Arbor, Michigan. 466p.
Habitat/range: On the ground, typically in hardwood forests. Widespread in BC, known from a few collections scattered across the province. Elsewhere in western North America, known from MT, OR, CA, CO, and AZ.
Basidiomata stipitate; stipe usually central, 3–4 cm long, 2–6 mm diameter, cylindrical or flattened, somewhat broader at the base, surface satiny-shiny, bright red brown; pileus plane or centrally depressed, round, rarely more than 4 cm diameter, up to 5 mm thick; margin lobed or entire and then incised; pileus surface velvety, shiny to glossy, concentrically zonate, brown to deep reddish brown; context rusty to reddish brown, fibrous, up to 1 mm thick; tubes up to 2 mm deep, brown to deep reddish brown; pore surface reddish brown, edges thin; pores angular, 2–4 per millimetre.Hyphae 2–10 μm diameter, walls hyaline and thin or golden yellow to rusty brown and thickened; basidiospores broadly ellipsoid, 6–10 × 4.5–7.0 μm, walls golden yellow, thin to thickened, weakly dextrinoid.
Notes: The antler-like hyphal tips on the pileus surface of C. perennis are lacking in C. cinnamomea. Coltricia montagnei (Fr.) Murrill is known only from Oregon in western North America. It is distinguished by a poroid lower surface or by concentrically arranged lamellae, and by thicker basidiomata and basidiospores up to 14 μm long.
polypores of BC