Additions to Amanita (Amanitaceae, Agaricales) section Arenariae from south-western Australia
E. M. Davison A B F , D. Giustiniano C D , N. L. Bougher B , L. E. McGurk C E and E. L. J. Watkin C D
+ Author Affiliations
- Author Affiliations
A School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
B Western Australian Herbarium, Department of Biodiversity, Conservation and Attractions, Locked Bag 104, Bentley Delivery Centre, WA 6983, Australia.
C School of Biomedical Sciences, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
D Curtin Medical School, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
E Present address: Human Resources, The University of Western Australia, Crawley, WA 6009, Australia.
F Corresponding author. Email: e.davison@curtin.edu.au
Australian Systematic Botany 34(6) 541-569 https://doi.org/10.1071/SB21017
Submitted: 27 4 2021 Accepted: 29 7 2021 Published: 8 September 2021
Journal Compilation © CSIRO 2021 Open Access CC BY
Abstract
A recent molecular phylogeny of Amanita recognises three subgenera and 11 sections. Members of subgenus Amanitina are characterised by amyloid spores and a mycorrhizal habit. Section Arenariae falls within this subgenus. Members of this section are known only from southern Australia; they are either sequestrate (secotioid) or agaricoid and lack clamp connections. We describe the following three additional secotioid species: Amanita arenarioides Bougher, E.M.Davison & Giustiniano, A. compacta Bougher, E.M.Davison & Giustiniano and A. pseudoarenaria E.M.Davison, Giustiniano & Bougher, which are separated on macroscopic appearance, spore shape and genetic sequences. We also describe two agaricoid species, namely, A. pupatuju E.M.Davison, Giustiniano, McGurk & E.L.J.Watkin, and A sabulosa E.M.Davison & Giustiniano, which are separated on bulb shape and genetic sequences. We provide expanded descriptions of A. arenaria (O.K.Mill. & E.Horak) Justo and A. griselloides D.A.Reid; we also synonymise A. dumosorum D.A.Reid with A. peltigera D.A.Reid. A revised diagnosis and description of section Arenariae is provided, together with a key to currently recognised member of this section.
Keywords: Basidiomycota, multi-gene phylogenetics, taxonomy, ITS variation.
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