Major Groups > Polypores > Coltricia cinnamomea


Coltricia montagnei

[ Basidiomycetes > Hymenochaetales > Hymenochaetaceae > Coltricia . . . ]

by Ron Meyers

Coltricia montagnei is not a common mushroom in Kansas, or probably anywhere else. The specimen in my photo is the only one ever reported from this state, when Richard Kay, one of the founders of the Kaw Valley Mycological Society, collected it in 1995.

I did not see another Coltricia montagnei specimen until the 2004 North American Mycological Association Foray in Asheville, North Carolina, where Dianna Smith took her photograph of this polypore. On one of the forays there I overheard some experienced mushroomers discussing a specimen. When they stated that the gill pattern should be a distinguishing characteristic, I caught a glimpse and was immediately able to identify it. It was a boost to my ego to appear knowledgeable in front of much more professional hunters.

Coltricia montagnei has had identity problems over the years, most of them not related to taxonomic issues typical of many other mushrooms. Earlier guides indicated that specimens with pores were not the same mushroom as those with "gills." The latter were called "Coltricia montagnei var. greenei, Coltricia greenei, or Cyclomyces greenei. These can all be considered synonyms for what is now simply accepted as Coltricia montagnei.


Ecology: Terrestrial; apparently saprobic on decaying organic matter; found under hardwoods or, less commonly, conifers; widespread in eastern North America but not common; summer and fall.

Cap: 3.5-14 cm wide; circular to fan-shaped in outline; convex to flat or depressed at the center; yellow-brown to red-brown or blackish brown; surface uneven, with concentric zones of color; velvety to matted-hairy; margin wavy or sometimes torn. Occasionally caps will be grown together.

Pore Surface: Whitish to grayish-brown, darkening with age; pores angular, radially elongated near the stalk, taking the form of concentric gill-like plates near the margin; tubes up to 5 mm deep.

Stem: 3-15 cm long; 3-15 mm or more thick; usually tapered to base; velvety; reddish brown to dark brown; sometimes off-center.

Flesh: Tough; leathery, becoming fibrous in age; cinnamon to rusty brown.

Chemical Reactions: All parts stain black with KOH.

Spore Print: Pale brown.

Microscopic Features: Spores 9-15 x 5-7.5 µ; smooth; oblong to elliptical; dextrinoid.

REFERENCES: (Fries, 1836) Murrill, 1920. (Smith, Smith & Weber, 1981; Arora, 1986; Gilbertson & Ryvarden, 1986; Phillips, 1991/2005; Lincoff, 1992; Barron, 1999; Roody, 2003; McNeil, 2006.)

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Coltricia montagnei

Coltricia montagnei

Coltricia montagnei

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Meyers, R. (2004, November). Coltricia montagnei. Retrieved from the MushroomExpert.Com Web site: