Parmelia ernstiae

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Parmelia ernstiae
A lichen - Parmelia ernstiae - geograph.org.uk - 1213636.jpg
Scientific classification edit
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Parmelia
Species:
P. ernstiae
Binomial name
Parmelia ernstiae
Feuerer & A.Thell (2002)

Parmelia ernstiae is a species of foliose lichen in the family Parmeliaceae. It occurs in Europe.

Taxonomy[]

The lichen was described as a new species in 2002 by lichenologists Tassilo Feuerer and Arne Thell. The type specimen was collected from the trunk of European ash (Fraxinus excelsior) in Germany. It is a member of the Parmelia saxatilis species complex; it can be distinguished from that species by its strongly pruinose thallus and isidia.[1] Another member of this complex is .[2]

Distribution[]

First reported in Germany, Parmelia ernstiae has since been recorded Fennoscandia, including Denmark, southern Finland, and southwestern Sweden.[3] It was reported as new to Norway in 2019,[4] the same year it was reported from Belarus.[5] The eastern limits of its distribution extend to Bosnia-Herzegovina, the Czech Republic, and eastern Germany. Parmelia ernstiae typically grows on tree bark, although a single specimen from Denmark has been found growing on rock. Other than the substrate, it is morphologically and chemically identical to individuals that grow on bark.[2]

Description[]

The thallus of Parmelia ernstiae comprises small rounded lobes that rarely overlap each other. In the central parts of the thallus, the lobes are intermixed with isidia. The thallus has a pruinose coating, which helps to distinguish it from P. saxatilis. The lobes of the lookalike Parmelia serrana are larger than those of P. ernstiae, and typically overlap.[2]

Chemistry[]

Several secondary chemicals have been identified in Parmelia ernstiae, including: salazinic acid (a major compound), atranorin, , , , , , , and (all minor compounds). Parmelia ernstiae has the largest set of secondary chemicals in the Parmelia saxatilis group, and can be distinguished from those lookalikes by its secondary chemical composition.[2]

References[]

  1. ^ Feuerer, T.; Thell, A. (2002). "Parmelia ernstiae Feuerer & Thell – a new macrolichen from Germany". Mitteilungen aus dem Institut für Allgemeine Botanik Hamburg (in German). 30–32: 49–60.
  2. ^ a b c d Thell, Arne; Elix, John A.; Feuerer, Tassilo; Hansen, Eric Steen; Kärnefelt, Ingvar; Schüler, Nikolaus; Westberg, Martin (2008). "Notes on the systematics, chemistry and distribution of European Parmelia and Punctelia species (lichenized ascomycetes)" (PDF). Sauteria. 15: 545–559.
  3. ^ Thell, Arne; Tsurykau, Andrei; Persson, Per-Erik; Hansson, Mats (2017). "Parmelia ernstiae, P. serrana and P. submontana, three species increasing in the Nordic countries". Graphis Scripta. 29: 24–32.
  4. ^ Haugan, Reidar; Timdal, Einar (2019). "The morphologically cryptic lichen species Parmelia ernstiae and P. serrana new to Norway". Graphis Scripta. 31: 5–13. open access
  5. ^ Tsurykau, Andrei; Bely, Pavel; Golubkov, Vladimir; Persson, Per-Erik; Thell, Arne (2019). "The lichen genus Parmelia (Parmeliaceae, Ascomycota) in Belarus". Herzogia. 32 (2): 375–384. doi:10.13158/heia.32.2.2019.375. S2CID 209522900.
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