Published March 5, 2024 | Version v1
Taxonomic treatment Open

Rhizoctonia angustispora

  • 1. Division of Ecology and Evolution, Research School of Biology, Australian National University, Canberra ACT, 2600, Australia
  • 2. Royal Botanic Gardens Victoria, Birdwood Avenue, South Yarra VIC, 3141, Australia

Description

Rhizoctonia angustispora (Warcup & P.H.B. Talbot) R.P. O’Donnell, C.C. Linde & T.W. May, comb. nov. MB 852035.

Basionym: Ceratobasidium angustisporum Warcup & P.H.B. Talbot, New Phytol. 86 (3): 267. 1980.

Type citation: ‘ Holotypus: Herb. ADW No. 16594, J. H. Warcup (0507) (described 1971 as C. sp.) … Host: Pterostylis mutica R. Br., Hincks, Eyre Peninsula, South Australia.’ According to Roberts (1999) the type ‘cannot now be found’.

ITS barcode: AJ427403 (T).

UNITE 1.5 % SH: SH0987490.10FU.

Alternative markers: ATP6 = DQ301591 (T); LSU = MH873364 (T); RPB2 = DQ301722 (T).

Ex-type culture: CBS 568.83.

Notes: Roberts (1999) treated this taxon as conspecific with R. pseudocornigera, despite the highly disjunct distribution between the type of Ceratobasidium angustisporum (Australia) and the type of R. pseudocornigera (Denmark). The type specimen of R. pseudocornigera has to date not been sequenced; however, the ex-type culture of Cb. angustisporum has been sequenced. Sequences of Cb. angustisporum are curated in the UNITE database as species hypothesis SH0987490.10. Sequences corresponding with this species hypothesis from global soil samples appear to have only been identified in Australia and South Africa, supporting the proposition that this taxon is distinct from the northern hemisphere R. pseudocornigera.

Notes

Published as part of O'Donnell, R. P., Linde, C. C. & May, T. W., 2025, Rise up, Rhizoctonia: moving to one fungus, one name in the Ceratobasidiaceae (Agaricomycetes, Cantharellales), pp. 285-325 in Persoonia 54 (1) on page 301, DOI: 10.3114/persoonia.2025.54.09, http://zenodo.org/record/17127619

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Linked records

Additional details

Biodiversity

Collection code
ADW, J, H, C, R
Material sample ID
ADW No. 16594
Scientific name authorship
Warcup & P. H. B. Talbot
Kingdom
Fungi
Phylum
Basidiomycota
Order
Cantharellales
Family
Ceratobasidiaceae
Genus
Rhizoctonia
Species
angustispora
Taxon rank
species
Type status
holotype

References

  • Roberts P (1999). Rhizoctonia-forming Fungi: A Taxonomic Guide. Kew Publishing, United Kingdom.