Tuckermanella
Tuckermanella fendleri
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Tuckermanella
Essl. (2003)
Type species
Tuckermanella weberi
(Essl.) Essl. (2003)
Species

T. arizonica
T. coralligera
T. fendleri
T. pseudoweberi
T. rickieae
T. subfendleri
T. weberi

Tuckermanella is a genus of lichen-forming fungi in the family Parmeliaceae.[1]

Taxonomy

The genus was circumscribed in 2003 by lichenologist Ted Essingler to contain cetrarioid lichens previously placed in the "Cetraria fendleri" species group. The genus names honors the American lichenologist Edward Tuckerman.[2]

In 2017, Pradeep Divakar and colleagues used a then-recently developed "temporal phylogenetic" approach to identify temporal bands for specific taxonomic ranks in the family Parmeliaceae, suggesting that groups of species that diverged within the time window of 29.45–32.55 million years ago represent genera. They proposed to synonymize Tuckermanella with Nephromopsis, along with several other Parmelioid genera, so that all the genera within the Parmeliaceae are about the same age.[3] Although some of their proposed taxonomic changes were accepted, the synonymization of the Parmelioid genera with Nephromopsis was not accepted in a later critical analysis of the temporal phylogenetic approach for fungal classification.[4]

Description

Tuckermanella lichens have small- to medium-sized foliose (leafy) thalli, and are generally brown to blackish-green in colour. They have continuous pseudocyphellae (tiny pores that allow gas exchange) on the margins of their lobes. Tuckermannopsis and Melanohalea are similar in appearance, although species in those genera are typically larger and lack the continuous marginal pseudocyphellae.[5]

Species

  • Tuckermanella arizonica Essl. 2003)
  • Tuckermanella coralligera (W.A.Weber) Essl. (2003)
  • Tuckermanella fendleri (Nyl.) Essl. (2003)
  • Tuckermanella pseudoweberi Essl. (2003)
  • Tuckermanella rickieae Essl. (2016)[6] – Mexico
  • Tuckermanella subfendleri (Essl.) Essl. (2003)
  • Tuckermanella weberi (Essl.) Essl. (2003)

References

  1. ↑ Lücking, Robert; Hodkinson, Brendan P.; Leavitt, Steven D. (2017). "The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota – Approaching one thousand genera". The Bryologist. 119 (4): 361–416. doi:10.1639/0007-2745-119.4.361. S2CID 90258634.
  2. ↑ Esslinger, T.L. (2003). "Tuckermanella, a new cetrarioid genus in western North America". Mycotaxon. 85: 135–141.
  3. ↑ Divakar, Pradeep K.; Crespo, Ana; Kraichak, Ekaphan; Leavitt, Steven D.; Singh, Garima; Schmitt, Imke; Lumbsch, H. Thorsten (2017). "Using a temporal phylogenetic method to harmonize family- and genus-level classification in the largest clade of lichen-forming fungi". Fungal Diversity. 84: 101–117. doi:10.1007/s13225-017-0379-z. S2CID 40674310.
  4. ↑ Lücking, Robert (2019). "Stop the abuse of time! Strict temporal banding is not the future of rank-based classifications in fungi (including lichens) and other organisms". Critical Reviews in Plant Sciences. 38 (3): 199–253. doi:10.1080/07352689.2019.1650517. S2CID 202859785.
  5. ↑ Esslinger, Theodore L. (2016). "Tuckermanella in Mexico". In Herrera-Campos, Maria; Pérez-Pérez, Rosa Emilia; Nash III, Thomas H. (eds.). Lichens of Mexico. The Parmeliaceae – Keys, distribution and specimen descriptions. Stuttgart: J. Cramer. pp. 491–501. ISBN 978-3-443-58089-6.
  6. ↑ Esslinger, T.L. (2016). "Tuckermanella in Mexico". In Herrera-Campos, Maria; Pérez-Pérez, Rosa Emilia; Nash, Thomas H. III (eds.). Lichens of Mexico. The Parmeliaceae – Keys, distribution and specimen descriptions. Bibliotheca Lichenologica. Vol. 110. Stuttgart: J. Cramer. pp. 491–501. ISBN 978-3-443-58089-6.
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