Cortinarius beeverorum, a new species of sequestrate Cortinarius from New Zealand
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Cortinarius peraurantiacus is a truffle-like fungus associated with Leptospermum. In the protologue of this species, a second, morphologically different but closely related form is mentioned, found in association with Nothofagus s.l. Phylogenetic analysis of ITS sequences indicates that both the Leptospermum-associated and Nothofagus-associated forms are nested within Cortinarius, but are distinct species. Cortinarius peraurantiacus is closely related to Protoglossum luteum. The southern beech-associated form is sister to an undescribed truffle-like species from Tasmania, and together are related to the New Zealand native mushroom Cortinarius dulciolens. Cortinarius beeverorum is described and illustrated to accommodate the southern beech-associated form.
KeywordsCortinarius Taxonomy Truffle-like
Dr Ross Beever had invaluable, significant input into preliminary examination of material, determination of distinct taxa and discussion of preliminary phylogenetic analyses. We thank staff of PDD and OTA for their assistance in loaning specimens and VR Tomlinson for expert technical help. Some of this work was completed while XYW was in receipt of a JS Tennant Fund Summer Studentship from the Department of Botany, University of Otago. DAO acknowledges support from the Brenda Shore Fund and Performance Based Research Fund through the Department of Botany, University of Otago.
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