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

Tuber beyerlei Trappe, Bonito & Guevara
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 Tuber beyerlei
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Species Information

Features include 1) small, nearly round or irregular, orange-brown fruitbodies with a granulose surface, 2) solid interior that is light brown marbled with white veins, 3) garlicky odor, 4) underground growth in association with conifers or hardwoods, and 5) microscopic characters including spores with reticulate ornamentation, and other details that distinguish it from other Tuber species ; described originally from OR, and its ectomycorrhizae has been sequenced from truffle orchards in BC
Outer Surface:
0.5-2.0cm across, subglobose [nearly spherical] to globose or irregular; "orange brown, light brown when dried"; peridium granulose to irregularly roughened with 8-10 flat to rounded warts per millimeter
solid; "light brown marbled with white veins"
not recorded
spores excluding ornamentation in 1-spored asci 37-47 x 32-40 microns, in 2-spored asci (26)32-45 x 23-28 microns, in 3-spored asci 20-35 x 20-30 microns, and in 4-spored asci 23-28 x 19-26 microns, "subglobose to broadly ellipsoid or sometimes globose", walls up to 4 microns thick "and reddish brown to brown in KOH, reddish brown in Melzer's reagent", reticulum with (4)6-10 meshes along spore length and 3-8 meshes across, the alveolar walls 3-5(7) microns tall, "some spores subalveolate or with irregular reticulation" ; asci 60-80 x 50-60 microns, "subglobose to broadly ellipsoid, pedicel lacking to prominent", the walls up to 1 micron thick, colorless in KOH, yellow in Melzer's reagent; peridium 200-350 microns thick, pellis a pseudoparenchyma, 100-290 microns thick, the cells 7-30 microns wide, "versiform to angular or isodiametric, grouped to form warts, yellowish to reddish brown in KOH", the walls 2-3 microns thick, dermatocystidia 35-85 x 2-4 microns, colorless, "clustered, tapered to the tip, some sinuate, fragile, thin-walled, septate", subpellis 40-90 microns thick, of colorless, periclinal to interwoven hyphae 3-8 microns wide at the septa; gleba of colorless, interwoven, thin-walled hyphae, 2-5 microns wide at the septa, the cells commonly inflated to 6-15 microns wide

Habitat / Range

under Pseudotsuga menziesii (Douglas-fir), May and November; ectomycorrhizae belonging to T. beyerlei have been sequenced from truffle orchards in BC, Canada, established with Corylus and Quercus spp. that had been inoculated with T. melanosporum (Shannon Berch pers. comm. to Guevara(1))

Taxonomic and Nomenclatural Links

Genetic information (NCBI Taxonomy Database)
Taxonomic Information from the World Flora Online
Index Fungorium
Taxonomic reference: in Guevara, Bonito & Trappe, Mycologia 105(1): 198. 2012

Additional Range and Status Information Links

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Species References

General References