|Major Groups > Polypores > Coltricia montagnei|
by Michael Kuo
From above Coltricia montagnei looks like several "normal polypores" (an Inonotus, or a small, older, lonely specimen of Phaeolus schweinitzii), with a velvety surface featuring concentric zones of color. It even looks like other species of Coltricia from above—though it is much larger than Coltricia cinnamomea, the best-known Coltricia. Flip the mushroom over, however, and its fascinating concentric gills (the official term is "cyclomycoid tubes") are quite a surprise.
Thanks to Walt Sturgeon for collecting Coltricia montagnei; his collection is deposited in The Herbarium of Michael Kuo. Thanks to Sherwood Forest Friends for facilitating collection of specimens.
Ecology: Apparently saprobic; growing terrestrially, alone or gregariously under hardwoods or conifers; widely distributed east of the Rocky Mountains but more common in the southern Appalachians than elsewhere; summer and fall. The illustrated and described collections are from Ohio and North Carolina.
Cap: 3–12 cm wide; occasionally fused with other caps; dry; finely velvety to matted-woolly; concentrically zoned with shades of brown and orangish brown, often with yellow zones toward the margin and, when young, a white to pale yellowish or orangish marginal edge; in age becoming more brown overall, with fewer orangish or yellowish shades.
Pore Surface: Poroid when young and occasionally poroid or partly poroid when mature; pores 1–2 mm across, angular, yellowish brown to orangish brown, bruising darker brown.
Gills: Developing with maturity; concentrically arranged; thick; wavy; sometimes cross-veined; dull orangish brown to tan, sometimes bruising darker brown.
Stem: 2–8 cm long; 1–2 cm thick; tapered to a pinched base; velvety; dark brown; sometimes substantially reduced so that, from above, the mushroom appears stem-less.
Flesh: Tough; rusty brown.
Spore Print: Brown.
Microscopic Features: Spores 10–13 x 5–6.5 µm; more or less ellipsoid; smooth; brownish-orangish to dark orange-brown in KOH; walls about 1 µm thick; dextrinoid. Cystidia, setae not found. Hyphal system monomitic; contextual hyphae 5–15 µm thick, smooth, orange-brown in KOH, walls to 1 µm thick; often branching at about 90 degrees.
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.) Herb. Kuo 07181507, 08091918.
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Cite this page as:
Kuo, M. (2019, October). Coltricia montagnei. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/coltricia_montagnei.html