Junghuhnia zonata (Bres.) Ryvarden
no common name
Steccherinaceae

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

Introduction to the Macrofungi

Photograph

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Map

E-Flora BC Static Map

Distribution of Junghuhnia zonata
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Species Information

Summary:
Features include flat growth on recently fallen conifers with bark attached, ivory white pores, an ivory white margin that is finely tomentose and often concentrically zoned and fringed, and microscopic characters including cylindric to slightly curved spores measuring 5.0-7.5 x 1.5-2.0 microns, and abundant incrusted, thick-walled cystidia. It is generally rarely collected, but rather common at Priest Lake ID, (Gilbertson). The description derived from Gilbertson(1).
Taste:
slightly rancid
Microscopic:
spores 5-7.5 x 1.5-2 microns, cylindric, "slightly curved to distinctly allantoid", smooth, inamyloid, colorless; basidia 4-spored, 14-30 x 5-7 microns, clavate, with basal clamp; cystidia abundant, 40-70 x 8-14 microns, narrowly conic to subulate [awl-shaped], thick-walled, incrusted at top to almost completely; hyphal system dimitic: subiculum generative hyphae 2.5-5.5 microns wide, "thin-walled, occasionally branched, with clamps", subiculum skeletal hyphae 2.5-7 microns wide, colorless, thick-walled, rarely branched, nonseptate, trama hyphae similar with generative hyphae more prominent
Notes:
Junghuhnia zonata has been found in BC, WA, ID (type location), CA, MT, and NM, (Gilbertson).

Habitat and Range

SIMILAR SPECIES
The rotted wood with black flecks is similar to the decays cause by Heterobasidion annosum group and Perenniporia subacida (Ginns(28))
Habitat
annual, on recently fallen conifers with bark still attached, known from Abies (fir), Larix (larch), Pseudotsuga (Douglas-fir), and Tsuga (hemlock), causes white pocket rot of dead conifer wood, with conspicuous black flecks in advanced pockets running parallel to the wood grain, in advanced stages "the decayed wood separates along the annual rings and becomes laminated"

Synonyms

Synonyms and Alternate Names:
Helvella californica W. Phillips
Poria zonata Bres.
Pseudorhizina californica (W. Phillips) Harmaja