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

Ganoderma brownii (Murrill) Gilb.
no common name

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

Introduction to the Macrofungi
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Distribution of Ganoderma brownii
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Species Information

somewhat similar to the common Ganoderma applanatum but with larger spores and yellow pore surface; description derived from Gilbertson(1); found in CA (Gilbertson), BC (Brenda Callan)
up to 20cm x 10cm x 5cm, stemless, semicircular, flattened horizontally to hoof-shaped, cap surface "finely tomentose and yellowish at the growing margin, quickly becoming crustose" with a hard, horny crust up to 0.1cm thick; pale vinaceous to grayish brown; shallowly to deeply sulcate (grooved) and faintly zoned
up to 4cm thick, firm-fibrous; dark purplish brown; concentrically zonate
4-5 per mm, rounded, with very thick entire walls; "with a bright yellowish cast, bruising dark brown, the yellowish cast remaining on dried specimens"; tube layer "purplish brown, sharply differentiated from the context, tubes whitish within, up to 1.5cm thick"
spores 11-12 x 7-8 microns, broadly elliptic, inamyloid, brown in KOH, with a truncate apex and an apical germ pore, wall two-layered with interwall pillars; basidia 4-spored, about 23-11 microns, "collapsed and difficult to discern in type specimen, apparently broadly clavate with a sharply narrowed base"; cystidia absent; hyphal system trimitic: context generative hyphae 2.5-3.5 microns wide, obscure, colorless, thin-walled, with clamp connections, context skeletal hyphae 2-10 microns wide, pale brown in KOH, thick-walled, nonseptate, with occasional branching, context binding hyphae "rare to apparently absent in crushed mounts of context tissue", trama generative and skeletal hyphae similar, trama binding hyphae 2-5.5 microns wide, colorless to pale brown, "thick-walled, nonseptate, much branched", "often dendritically branched with tapering, pointed tips"

Habitat / Range

perennial, on hardwoods, causing white rot of living and dead hardwoods

Synonyms and Alternate Names

Elfvingia brownii Murrill

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Gilbertson(1), Arora(1), Brenda Callan pers. comm.

References for the fungi

General References