Pseudevernia is a genus of foliose lichens in the family Parmeliaceae.[1] The type species of the genus, Pseudevernia furfuracea (commonly known as tree moss), has substantial commercial value in the perfume industry.[2]
| Pseudevernia | |
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| Pseudevernia furfuracea | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Pseudevernia Zopf (1903) |
| Type species | |
| Pseudevernia furfuracea (L.) Zopf (1903)
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Systematics
editPseudevernia was circumscribed by German botanist Friedrich Wilhelm Zopf in 1903 with Pseudevernia furfuracea as the type species.[3]
Pseudevernia is a member of the Hypogymnioid clade of the family Parmeliaceae; this clade, which also includes the genera Arctoparmelia, Brodoa, and Hypogymnia, is an evolutionary lineage comprising species occurring in temperate to subpolar regions in both hemispheres. Pseudevernia has been estimated to have diverged from its closest ancestors during the Oligocene at 31.43 Ma, and is the earliest-diverging member of the Hypogymnioid clade.[4]
Description
editPseudevernia lichens generally have a foliose (leafy) thallus, although occasionally it becomes almost fruticose in form. This is the case with P. cladonia, which has intricately branched lobes about 1 mm wide; the lobes of most other Pseudevernia species are 2–4 mm wide. The lower surface of the thallus often darkens to a purplish-black or mottled white colour, a striking feature that is characteristic of this genus.[5]
Several secondary chemicals are produced amongst Pseudevernia lichens. All species in the genus produce atranorin in the cortex, while lecanoric acid, physodic acid, and olivetoric acid occur in the medullae of some species.[5]
Species
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- Pseudevernia alectoronica Egan (2016)[6] – Mexico
- Pseudevernia cladonia (Tuck.) Hale & W.L.Culb. (1966) – eastern North America; Dominican Republic
- Pseudevernia confusa (Du Rietz) R.Schub. & Klem. (1966)
- Pseudevernia consocians (Vain.) Hale & W.L.Culb. (1966) – North America
- Pseudevernia furfuracea (L.) Zopf (1903) – cosmopolitan
- Pseudevernia intensa (Nyl.) Hale & W.L.Culb. (1966) – North America
- Pseudevernia isidiophora (Zopf) Zopf (1903)
- Pseudevernia mexicana Egan (2016)[6]
- Pseudevernia soralifera (Bitter) Zopf (1903) – Europe
Some species once classified in Pseudevernia have since been reduced to synonymy with other species, or have been transferred to other genera. These include:
- Pseudevernia cirrhata (Fr.) R.Schub. & Klem. (1966) is now known as Hypotrachyna cirrhata.[7]
- Pseudevernia kamerunensis (J.Steiner) C.W.Dodge (1959) is now known as Hypotrachyna sorocheila.[8]
- Pseudevernia molliuscula (Ach.) C.W.Dodge (1959) and Pseudevernia thamnidiella (Stirt.) C.W.Dodge (1959) are synonymous Xanthoparmelia molliuscula.[9][10]
- Pseudevernia olivetorina (Zopf) Zopf (1903) and Pseudevernia ericetorum (Fr.) Zopf (1905) have been folded into synonymy with Pseudevernia furfuracea.[11]
- Pseudevernia mauritiana (Gyeln.) C.W.Dodge (1959) is synonymous with Parmelia microblasta.[9]
- Pseudevernia polita (Fr.) C.W.Dodge (1959) is now Parmotrema cetratum.[9]
Molecular phylogenetic analysis suggests that the North American species P. consocians and P. intensa do not form separate monophyletic groups, and so might be the same species.[4]
References
edit- ^ Wijayawardene, Nalin; Hyde, Kevin; Al-Ani, Laith Khalil Tawfeeq; Somayeh, Dolatabadi; Stadler, Marc; Haelewaters, Danny; et al. (2020). "Outline of Fungi and fungus-like taxa". Mycosphere. 11: 1060–1456. doi:10.5943/mycosphere/11/1/8. hdl:10481/61998.
- ^ Calchera, Anjuli; Grande, Francesco Dal; Bode, Helge B.; Schmitt, Imke (2019). "Biosynthetic gene content of the 'perfume lichens' Evernia prunastri and Pseudevernia furfuracea". Molecules. 24 (1): e203. doi:10.3390/molecules24010203. PMC 6337363. PMID 30626017.
- ^ Zopf, Wilhelm (1903). "Vergleichende Untersuchungen über Flechten in Bezug auf ihre Stoffwechselprodukte". Beihefte zum Botanischen Centralblatt (in German). 14: 95–126.
- ^ a b Divakar, Pradeep K.; Wei, Xin‐Li; McCune, Bruce; Cubas, Paloma; Boluda, Carlos G.; Leavitt, Steven D.; Crespo, Ana; Tchabanenko, Svetlana; Lumbsch, H. Thorsten (2019). "Parallel Miocene dispersal events explain the cosmopolitan distribution of the Hypogymnioid lichens". Journal of Biogeography. 46 (5): 945–955. doi:10.1111/jbi.13554. S2CID 132411296.
- ^ a b Hale 1968, p. 3.
- ^ a b Egan, Robert Shaw; Pérez-Pérez, Rosa Emilia (2016). "Pseudevernia 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. Bibliotheca Lichenologica. Vol. 110. Stuttgart: J. Cramer. pp. 437–448. ISBN 978-3-443-58089-6.
- ^ "Record Details: Pseudevernia cirrhata (Fr.) R. Schub. & Klem., Nova Hedwigia 11: 59 (1966)". Index Fungorum. Retrieved 17 November 2021.
- ^ "Record Details: Pseudevernia kamerunensis (J. Steiner) C.W. Dodge, Ann. Mo. bot. Gdn 46: 182 (1959)". Index Fungorum. Retrieved 17 November 2021.
- ^ a b c Hale 1968, p. 10.
- ^ "Record Details: Pseudevernia molliuscula (Ach.) C.W. Dodge, Ann. Mo. bot. Gdn 46(1-2): 183 (1959)". Index Fungorum. Retrieved 17 November 2021.
- ^ "Record Details: Pseudevernia olivetorina (Zopf) Zopf, Beih. Botan. Centralbl., Abt. B 14: 125 (1903)". Index Fungorum. Retrieved 17 November 2021.
Cited literature
edit- Hale, Mason E. Jr. (1968). "A synopsis of the lichen genus Pseudevernia". The Bryologist. 71 (1): 1–11. doi:10.1639/0007-2745(1968)71[1:ASOTLG]2.0.CO;2.