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    Author(s): Gonzalo Guevara; Gregory Bonito; James M. Trappe; Efren Cázares; Gwendolyn Williams; Rosanne A. Healy; Christopher Schadt; Rytas Vigalys
    Date: 2013
    Source: Mycologia. 105(1): 194-209
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (2.44 MB)

    Description

    Recent surveys of belowground fungal biodiversity in Mexico and USA have revealed many undescribed truffle species, including many in the genus Tuber. Here we describe seven new species: Tuber beyerlei, T. castilloi, T. guevarai, T. lauryi, T. mexiusanum, T. miquihuanense and T. walkeri. Phylogenetic analyses place these species within the Maculatum group, an understudied clade of small truffles with little apparent economic value. These species are among the more taxonomically challenging in the genus. We collected Tuber castilloi, T. mexiusanum and T. guevarai as fruit bodies and ectomycorrhizae on Quercus spp. in forests of eastern Mexico. Tuber mexiusanum has a particularly broad geographic range, being collected in eastern USA under Populus deltoides and in Minnesota and Iowa in mixed hardwood forests. T. walkeri is described from the upper midwestern USA, and T. lauryi and T. beyerlei occur in the western USA.

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    Citation

    Guevara, Gonzalo; Bonito, Gregory; Trappe, James M.; Cázares, Efren; Williams, Gwendolyn; Healy, Rosanne A.; Schadt, Christopher; Vigalys, Rytas. 2013. New North American truffles (Tuber spp.) and their ectomycorrhizal associations. Mycologia. 105(1): 194-209.

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    Keywords

    Ascomycota, ectomycorrhizae, hypogeous fungi, Pezizales, Pezizomycetes, phylogeny

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