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Australian Journal of 

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The search for Australian relatives of the eucalypt-associated Russula prolifica (Russulales) from Madagascar reveals new Oceanian taxa in subsection Auratinae

Buyck Bart, Hofstetter Valerie, Horak Egon, Cooper Jerry & Bougher Neale

Author details ⏷

Buyck Bart[1*], Hofstetter Valerie[2], Horak Egon[3], Cooper Jerry[4] & Bougher Neale[5]

[1*] Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP 39, 57 rue Cuvier, 75005 Paris, France
[2] Département fédéral de l’économie, de la formation et de la recherche DEFR, Route de Duillier 60, CP 1012, 1260 Nyon 1, Switzerland
[3] Schlossfeld 17, A-6020 Innsbruck, Austria
[4] Manaaki Whenua - Landcare Research, P.O. Box 69040, Lincoln 7640, New Zealand
[5] Western Australian Herbarium, Biodiversity and Conservation Science, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, Western Australia 6983

Abstract

The authors examine the possibility that Russula prolifica, a commercially important edible mushroom associated with exotic Eucalyptus on the Central Plateau of Madagascar, is a recent introduction from Australia. The new Australian species, described here as R. discolor sp. nov., closely resembles R. prolifica and associates with eucalypts in south-western Australia. While R. prolifica has previously been placed in subsect. Virescentinae of subgen. Heterophyllidiae, this Australian look-alike is not a member of Virescentinae, but belongs in the crown clade of R. subgen. Russula, more precisely in the R. wielangtae lineage of subsect. Auratinae. This paper further provides a detailed type study for R. atroviridis from New Zealand, another presumed member of the R. wielangtae-lineage. However, we show that the current concept of R. atroviridis does not conform to the type specimen which clearly belongs in subsect. Tricholomopsidum of subgen. Russula. The sequences previously deposited in GenBank under the name R. atroviridis represent a different and new species that is here described as R. cooperiana sp. nov. We distinguish two morphologically and genetically different varieties of this species: the type variety associates with Nothofagaceae, while the new var. myrtacearum associates with Myrtaceae. Other potential members of the R. wielangtae lineage are also discussed, including the Australian R. wollumbina. The wider circumscription of subsect. Auratinae is here further supported and its various lineages discussed.

Cite this paper as: Buyck B, Hofstetter V, Horak E, Cooper J & Bougher N (2023). The search for Australian relatives of the eucalypt-associated Russula prolifica (Russulales) from Madagascar reveals new Oceanian taxa in subsection Auratinae. Australian Journal of Taxonomy 47: 1–25. doi: https://doi.org/10.54102/ajt.1rdyq

This paper was published on: 20/12/2023

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Paper

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Corrigendum

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