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Species Information
Summary: Features include strong anise odor, bracket-like to shelf-like growth on willow, a pale buff to dingy brown upper surface, light buff corky flesh, pale buff pores, and minutely spiny spores. The description is derived from Gilbertson(1) except where noted.
Haploporus odorus has been found in BC (Smithers, Vanderhoof, Fort St. John area, Prince George south to Cinema), south-central NT, northern AB, north-central SK, and southeastern MB, (Ginns(28)).
Cap: up to 6cm x 15cm x 8cm, bracket-like or bent outward to form shelf-like cap from pore surface growing flat on wood, margin rounded and sterile below; upper surface pale buff to darker dingy brown, margin colored the same; finely tomentose to almost bald, not zoned (or grayish, bald and incrusted on older larger specimens)
Flesh: up to 7cm thick, corky, faintly zonate or layered in appearance; light buff
Pores: 4-5 per mm, circular, with thick entire walls; pale buff; surface smooth; tube layer up to 1.5cm thick, becoming layered, colored as flesh
Odor: strong of anise
Microscopic: spores 5-6 x 3-4.5 microns, ovoid to elliptic, minutely but distinctly echinulate (spiny), slightly dextrinoid, colorless; basidia 4-spored, 19-27 x 7-9 microns, clavate with sharply narrowed base, with basal clamp; cystidia none; hyphal system trimitic: context generative hyphae 2-3.5 microns wide, "thin-walled, with clamps, rarely branched", context skeletal hyphae 3-5 microns wide, colorless, thick-walled, rarely branched, nonseptate, context binding hyphae 1.5-2.5 microns wide, colorless, thick-walled, much branched, nonseptate, trama hyphae similar but binding hyphae fewer
Habitat / Range
perennial, most commonly on living Salix (willow) also known on Fraxinus (ash), causes white heartrot of living trees, (Gilbertson), also known from single collections on Alnus and Populus, (Ginns(38))
Similar Species
Trametes suaveolens is similar macroscopically and has an anise odor, but is slightly lighter in color, grows on Populus, Betula and Abies as well as Salix, has a wider range, and microscopically has spores that are larger and smooth, (Gilbertson(1)). Gloeophyllum odoratum is confined to conifers and has cylindric spores measuring 7.5-11.0 x 3.0-4.5 microns, (Ginns(28)). Ischnoderma resinosum has a pore surface that is white to pallid, staining brown to fuscous where bruised, and spores are allantoid, measuring 4-7 x 1.5-2 microns, (Ginns(28)).
