|Major Groups > Polypores > Spongipellis pachyodon|
by Michael Kuo
This polypore looks more like a toothed mushroom, since its "pores" are typically eroded and tooth-like. Its white to dull yellowish fruiting bodies can be found spreading across the trunks of oaks and other hardwoods, often developing clearly defined caps, but also frequently consisting more of a spreading "tooth surface" than cap. Spongipellis pachyodon causes a white heart rot in living trees throughout eastern North America.
Ecology: Parasitic on oaks and other hardwoods; causing a white heart rot; annual; growing gregariously or in shelving or fused clusters; summer and fall; widely distributed in eastern North America.
Fruiting Body: Variable: sometimes merely a spreading pore surface; sometimes with a folded-over edge of a cap; sometimes with poorly to well developed caps.
Cap: Up to about 5 cm across and 5 cm deep; planoconvex to flat; very finely velvety, becoming bald; white to dull yellowish; sometimes finely radially grooved.
Pore Surface: Creamy white to dull yellowish; not bruising appreciably; composed of flattened tooth-like spines and irregular, angular pores; spines to about 1 cm deep.
Flesh: Whitish; soft above and tougher below.
Odor: Not distinctive.
Spore Print: Presumably white.
Microscopic Features: Spores 5-6.5 µ; smooth; globose; inamyloid; thick-walled. Cystidia absent. Hyphal system monomitic; clamp connections present.
Further Online Information:
Spongipellis pachyodon at Roger's Mushrooms
Cite this page as:
Kuo, M. (2010, March). Spongipellis pachyodon. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/spongipellis_pachyodon.html