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Geoglossaceae

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Geoglossaceae is a family of fungi in the order Geoglossales, class Geoglossomycetes. These fungi are broadly known as earth tongues. The ascocarps of most species in the family Geoglossaceae are terrestrial and are generally small, dark in color, and club-shaped with a height of 2–8 cm. The ascospores are typically light-brown to dark-brown and are often multiseptate. Other species of fungi have been known to parasitize ascocarps.[1][2] The use of a compound microscope is needed for accurate identification.[3]

Geoglossaceae
Geoglossum glutinosum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Subdivision: Pezizomycotina
Class: Geoglossomycetes
Zheng Wang, C.L.Schoch & Spatafora (2009)
Order: Geoglossales
Zheng Wang, C.L.Schoch & Spatafora (2009)
Family: Geoglossaceae
Corda (1838)
Type genus
Geoglossum
Pers. (1794)
Genera

Systematics

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Cladogram showing phylogeny of Geoglossomycetes based on a four-gene dataset.[4]

The fungi that are now included in the fungal class Geoglossomycetes were previously considered by mycologists to be a family (Geoglossaceae) within the class Leotiomycetes. The family Geoglossaceae sensu lato was previously defined with 6 genera and 48 species.[5] Early molecular evidence using ribosomal DNA[6][7][8] suggested that Geoglossaceae sensu lato was not a monophyletic group, and that the hyaline spored genera (e.g. Leotia, Microglossum, and Spathularia) were not allied within the same clade as the darker-spored genera (Geoglossum and Trichoglossum). Schoch et al.,[9] using a six-gene phylogeny including ribosomal DNA and protein-coding genes, found support for the establishment of a new class (Geoglossomycetes), containing the genera Geoglossum, Sarcoleotia, and Trichoglossum. Further molecular research resulted in the addition of Nothomitra (previously treated as a relative or synonym of Microglossum) to the group in 2011.[10] Glutinoglossum was circumscribed in 2013 to contain the species formerly known as Geoglossum glutinosum, and a new European species, G. heptaseptatum.[4]

Several species in the genus Neolecta have similar morphology and are also known by the common name of "earth tongues", but they are members of the quite distantly related Taphrinomycotina, an entirely different subdivision of the Ascomycota.

Habitat

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Earth tongues are commonly found in soil or among rotting vegetation.[11] In North America, they are commonly found in coniferous woodland, broad-leaved woodland and mixed woodland habitats,[12] whereas in Europe they are commonly found in grassland habitats[11][13] and are major components of the endangered waxcap grassland habitat.

References

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  1. ^ Seeler, E. V. (1943). "Several Fungicolous Fungi". Farlowia: 119–133.
  2. ^ Rossman, A. Y.; Samuels, G. J.; Rogerson, C. T.; Lowen, R. (1999). "Genera of Bionectriaceae, Hypocreaceae, and Nectriaceae (Hypocreales, Ascomycetes)". Studies in Mycology. 42: 186.
  3. ^ "Family: Geoglossaceae". The Hidden Forest. 26 August 2009.
  4. ^ a b Hustad, V. P.; Miller, A. N.; Dentinger, B. T. M.; Cannon, P. F. (2013). "Generic circumscriptions in Geoglossomycetes". Persoonia. 31: 101–11. doi:10.3767/003158513x671235. PMC 3904045. PMID 24761038.  
  5. ^ Kirk, P. M.; Cannon, P. F.; Minter, D. W.; Stalpers, J. A. (2008). Dictionary of the Fungi (10th ed.). Wallingford, UK: CAB International. p. 279. ISBN 978-0-85199-826-8.
  6. ^ Pfister D, Kimbrough JW (2000). "Discomycetes". In Mclaughlin DJ, McLaughlin EG, Lemke PA (eds.). The Mycota VII Part A. Systematics and Evolution. Berlin: Springer. pp. 257–81.
  7. ^ Wang, Z.; Binder, M.; Schoch, C. L.; Johnston, P. R.; Spatafora, J. W.; Hibbett, D. S. (2006). "Evolution of helotialean fungi (Leotiomycetes, Pezizomycotina): A nucleear rDNA phylogeny". Molecular Phylogenetics and Evolution. 41 (2): 295–312. Bibcode:2006MolPE..41..295W. doi:10.1016/j.ympev.2006.05.031. PMID 16837216.
  8. ^ Wang, Z; Johnston, P. R.; Takamatsu, S.; Spatafora, J. W.; Hibbett, D. S. (2006). "Toward a phylogenetic classification of the Leotiomycetes based on rDNA data". Mycologia. 98 (6): 1065–75. doi:10.3852/mycologia.98.6.1065. PMID 17486981.
  9. ^ Schoch, C. L.; Wang, Z; Townsend, J. P.; Spatafora, J. W. (2009). "Geoglossomycetes cl. nov., Geoglossales ord. nov. and taxa above class rank in the Ascomycota Tree of Life" (PDF). Persoonia. 22: 129–36. doi:10.3767/003158509x461486. PMC 2776753. PMID 19915689.
  10. ^ Hustad, V. P.; Miller, A. N.; Moingeon, J.-M.; Priou, J.-P. (2011). "Inclusion of Nothomitra in Geoglossomycetes" (PDF). Mycosphere. 2 (6): 646–54. doi:10.5943/mycosphere/2/6/5.
  11. ^ a b Watson, L.; Dallwitz, M. J. (20 June 2009). "The Families of Mushrooms and Toadstools Represented in the British Isles". Archived from the original on 27 November 2010.
  12. ^ Mains, E. B. (1954). "North American species of Geoglossum and Trichoglossum". Mycologia. 46 (5): 586–631. doi:10.1080/00275514.1954.12024398.
  13. ^ Nannfeldt, J. A. (1942). "The Geoglossaceae of Sweden". Arkiv för Botanik. 30A: 1–67.
  • Cannon, P. F.; Kirk, P. M. (2007). Fungal families of the world. Wallingford, UK: CAB International. ISBN 978-0-85199-827-5.
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