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Species Information
Summary: The pores have a distinctive net-like or reticulate appearance. Other features include flat growth on wood with the pore surface exposed (grayish to white or grading from cream to pinkish to pale orange), growth on aspen, and relatively large allantoid spores. It is common throughout the range of aspen in North America, (Gilbertson).
Ceriporia reticulata has been found in BC, WA, OR, ID, AB, AZ, CA, CO, MA, MI, MN, MT, NM, NV, NY, UT, WI, and WY, (Gilbertson). It also occurs in Europe and Asia, (Breitenbach).
Cap: flat on wood usually in small patches, with pore surface exposed, fragile, separable, annual; margin white, thin, arachnoid (webby) to cottony, fimbriate (fringed), (Gilbertson), growing flat on wood, forming patches up to 0.1cm thick and several centimeters across, attached loosely, waxy soft when fresh, brittle when dry; margin filamentous and lighter in color to whitish, (Breitenbach)
Flesh: subiculum thin, soft and cottony; white to pinkish, (Gilbertson), very thin; whitish, (Breitenbach)
Pores: 3-4 per mm, round to irregular, "grayish to white or grading from cream to pinkish to pale orange"; tubes originating as isolated shallow depressions in the marginal tissue, (Gilbertson), 3-5 per mm, "+/- polygonal to rounded, rudimentary toward the margin", reticulate-porose; "whitish-ocherish when young, later ocher to pale orange-ocher", (Breitenbach)
Microscopic: spores 7-9.5 x 2-3.5 microns, allantoid [curved sausage-shaped], smooth, inamyloid, colorless; basidia 4-spored, 15-20 x 5-8 microns, clavate, simple-septate at base; cystidia absent; hyphal system monomitic: subicular hyphae 3-7 microns wide, "thin-walled, often branched at right angles, simple-septate, loosely interwoven", (Gilbertson), spores 7-8.5 x 2.5-3 microns, cylindric-allantoid, smooth, inamyloid, colorless, some with 2 droplets, (Breitenbach)
Habitat / Range
annual, common on dead aspen but also occurring on other hardwoods, rarely on conifers, causing white rot of dead hardwoods, (Gilbertson), on hardwoods, usually Populus, (Ginns), on the underside of rotten hardwood, more rarely conifer wood, (Breitenbach), probably all year (Buczacki)
Similar Species
Ceriporia excelsa may have similar pore structure to young specimens of C. reticulata, but has larger pores and smaller spores, (Breitenbach).
