Xenonectriella subimperspicua

Xenonectriella subimperspicua is a species of lichenicolous fungus in the family Nectriaceae. It has been recorded from South America, Europe, and New Zealand.[2]

Xenonectriella subimperspicua
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Sordariomycetes
Order: Hypocreales
Family: Nectriaceae
Genus: Xenonectriella
Species:
X. subimperspicua
Binomial name
Xenonectriella subimperspicua
(Speg.) Etayo (2017)
Synonyms[1]
  • Nectria subimperspicua Speg. (1898)
  • Nectriella subimperspicua (Speg.) R.Sant.(1984)
  • Pronectria subimperspicua (Speg.) Lowen (1990)
  • Xenonectriella subimperspicua var. degenerans Etayo (2017)

Taxonomy

The fungus was first formally described by Carlo Luigi Spegazzini in 1898 as a member of genus Nectria. Spegazzini collected the type specimen from South America, where it was growing on Punctelia constantimontium.[3] In 1984, Rolf Santesson proposed to transfer the taxon to genus Nectriella.[4] Rosalind Lowen transferred it and several other lichenicolous species to Pronectria in 1990.[5] Finally, Javier Etayo transferred the species to the genus Xenonectriella in 2017, giving it the binomial name by which it is currently known.[6]

Hosts

One of its hosts is the common foliose lichen species Punctelia borreri. Infection by X. subimperspicua creates discoloured or bleached areas on the thallus of the host;[7] the perithecia of the fungus then become more readily visible.[2] Two varieties of Xenonectriella subimperspicua have been defined: var. subimperspicua mostly parasitizes Parmelia and Punctelia but has also been recorded on Physcia, while var. degenerans parasitizes Parmotrema.[8]

References
  1. "Synonymy: Xenonectriella subimperspicua (Speg.) Etayo, Opera Lilloana 50: 495 (2017)". Species Fungorum. Retrieved 24 September 2021.
  2. Hafellner, Josef; Mayrhofer, Helmut (2007). "A contribution to the knowledge of lichenicolous fungi and lichens occurring in New Zealand". Bibliotheca Lichenologica. 95: 225–266.
  3. Spegazzini, Carlos (1898). "Fungi Argentini novi vel critici". Anales del Museo Nacional de Historia Natural Buenos Aires (in Latin). 6: 290.
  4. Santesson, R. (1984). "Fungi Lichenicoli Exs., Fasc. I-II (Nos 1-50)". Publications from the Herbarium University of Uppsala. 13: 1–20.
  5. Lowen, Rosalind (1990). "New combinations in Pronectria". Mycotaxon. 39: 461–463.
  6. Etayo, Javier (2017). "Hongos liquenícolas de Ecuador". Opera Lilloana (in Spanish). 50: 495.
  7. Zhurbenko, Mikhail P. (2013). "A first list of lichenicolous fungi from India". Mycobiota. 3: 19–34. doi:10.12664/mycobiota.2013.03.03.
  8. Diederich, Paul; Lawrey, James D.; Ertz, Damien (2018). "The 2018 classification and checklist of lichenicolous fungi, with 2000 non-lichenized, obligately lichenicolous taxa". The Bryologist. 121 (3): 340–425 (see p. 383). doi:10.1639/0007-2745-121.3.340. S2CID 92396850.
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