E-Flora BC: Electronic Atlas of the Flora of British Columbia

Junghuhnia nitida (Fr.) Ryvarden
no common name
Meruliaceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi
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Distribution of Junghuhnia nitida
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Species Information

Summary:
features include flat growth on hardwood with ochraceous buff to pinkish cinnamon pores exposed, and microscopic characters including ovoid to broadly elliptic spores and abundant incrusted thick-walled cystidia; found in BC, WA, OR, ID, also MB, ON, PQ, NS, AL, AR, AZ, GA, IA, IN, KY, LA, MA, MD, ME, MI, MN, MS, NC, NH, NJ, NY, OH, PA, TN, VA, VT, WI, common in eastern North America but rarely collected in the West, (Gilbertson), also Europe, Asia, Africa, (Breitenbach)
Cap:
growing flat on wood with pore surface exposed, spread out up to 10cm, tough-fibrous, drying brittle, often separating from the wood on drying, margin up to 0.2cm wide, pale ochraceous buff, finely tomentose, (Gilbertson), growing flat on wood, forming patches several centimeters in extent and 0.2-0.3cm thick; soft when fresh, hard and brittle when dry; margin distinctly bounded, white to cream, (Breitenbach)
Flesh:
subiculum up to 0.1cm thick, fibrous; cream to pale pinkish buff, (Gilbertson)
Pores:
5-7 per mm, angular, with thin entire walls; "varying greatly in color from ochraceous buff to pinkish cinnamon"; tube layer up to 0.1cm thick, colored as subiculum and continuous with it, (Gilbertson), 5-6 per mm, rounded-angular; "orange-ocher to salmon-yellow"; tube layer 0.1-0.2cm thick, (Breitenbach)
Odor:
faintly musty (Breitenbach)
Taste:
mild (Gilbertson)
Microscopic:
spores 4-4.5 x 2-2.5 microns, broadly elliptic to oval, smooth, inamyloid, colorless; basidia 4-spored, 10-13 x 4-5 microns, clavate, with basal clamp; cystidia abundant and conspicuous, "40-100 x 5-10 microns, completely imbedded or projecting to 30 microns", cylindric to clavate, thick-walled, heavily incrusted; hyphal system dimitic, subicular generative hyphae 2-4 microns wide, "thin-walled, with clamps, rarely branched", subicular skeletal hyphae 2-4 microns wide, colorless, "thick-walled, nonseptate, rarely branched", trama hyphae similar, (Gilbertson), spores 4-4.5 x 2-2.5 microns, elliptic to oval, smooth, inamyloid, colorless, with droplets; cystidia numerous, 20-50 x 8-10 microns, thick-walled, "rising out of the hymenium and some exserted", (Breitenbach)
Spore Deposit:
white (Buczacki)

Habitat / Range

annual, on dead hardwood, causes a uniform white rot, (Gilbertson), on the underside of fallen dead hardwoods, (Breitenbach), fall (Buczacki)

Synonyms and Alternate Names

Polyporus nitidus Fr.
Poria eupora (P. Karst.) Cooke

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Gilbertson(1), Breitenbach(2)*, Buczacki(1)*

References for the fungi

General References