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    Description

    Field ectomycorrhizas of Cortinarius helodes Moser, Matheny & Daniele (sp. nov) and Gyrodon monticola Sing. on Alnus acuminata Kunth (Andean alder, aliso del cerro) are described based on morphological and anatomical features. Ectomycorrhizal roots were sampled beneath fruitbodies of C. helodes and G. monticola from two homogeneous A. acuminata forest sites located in Tucuman and Catamarca Provinces in Argentina. C. helodes ectomycorrhizas showed a thick white to beige mantle exuding a milky juice when injured, were bluish toward the apex, and had hyphal strands in the mantle. G. monticola ectomycorrhizas showed some conspicuous features like highly differentiated rhizomorphs, inflated brown cells on the mantle surface, and hyaline and brown emanating hyphae with dolipores.

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    Citation

    Becerra, Alejandra; Nouhra, Eduardo; Daniele, Graciela; Dominguez, Laura; McKay, Donaraye. 2005. Ectomycorrhizas of Cortinarius helodes and Gyrodon monticola with Alnus acuminata from Argentina. Mycorrihiza. 15:7-15.

    Keywords

    Andean alder, Cortinarius helodes, Gyrodon monticola, morphological characterization, polymorphism

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https://www.fs.usda.gov/treesearch/pubs/34592