Summary:
Features include flat growth on hardwood with ochraceous buff to pinkish cinnamon pore surface exposed, and microscopic characters including ovoid to broadly elliptic spores measuring 4.0-4.5 x 2.0-2.5 microns and abundant incrusted, thick-walled cystidia. It is common in eastern North America but rarely collected in the West, (Gilbertson).
Junghuhnia nitida has been found in BC, WA, OR, ID, 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, and WI, (Gilbertson). It also occurs in Europe, Asia, and 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)
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)
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