| Montanelia panniformis | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Montanelia |
| Species: | M. panniformis |
| Binomial name | |
| Montanelia panniformis (Nyl.) Divakar, A.Crespo, Wedin & Essl. (2012) | |
| Synonyms | |
List
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Montanelia panniformis, commonly known as the shingle camouflage lichen, is a species of saxicolous (rock-dwelling) foliose lichen in the family Parmeliaceae. It has a mostly circumboreal distribution in Asia, Europe, and North America.
Taxonomy
Montanelia panniformis was originally described as Parmelia prolixa f. panniformis by William Nylander in 1860. His description compared the new form to Parmelia saxatilis and emphasised its key characteristics, including a thinner thallus, shorter lobes, and a tightly overlapping (imbricate) and crowded growth pattern. Nylander noted the lichen to be known from northern Europe, and said it was relatively common around Stockholm, Sweden, where the type specimen was collected. The species was later transferred to the genus Melanelia by Theodore L. Esslinger in 1978. In 2012, molecular phylogenetic studies by Divakar and colleagues demonstrated that this species, along with several other related taxa previously classified in Melanelia, formed a distinct lineage separate from Melanelia sensu stricto. This led to the establishment of the new genus Montanelia, with M. panniformis designated as its type species.
More recent molecular studies published in 2015 revealed that what was traditionally considered M. panniformis actually consists of at least two distinct species-level lineages: M. panniformis sensu stricto ("in the strict sense") and a cryptic lineage referred to as "M. panniformis A". The split between these lineages was estimated to have occurred during the Miocene around 7.2 million years ago. While M. panniformis sensu stricto has a broad intercontinental distribution throughout the Northern Hemisphere, "M. panniformis A" appears to be restricted to northwestern North America and eastern Asia. Despite their genetic distinctness, preliminary morphological comparisons have not yet revealed any reliable diagnostic traits to distinguish between these two lineages.
The creation of Montanelia was supported by both molecular data and morphological characteristics that distinguish it from related genera. Unlike other brown parmelioid lichens such as Melanelia, Melanohalea, and Melanelixia, Montanelia species are characterised by having short narrow lobes with plane to convex margins, flat effigurate pseudocyphellae on the upper surface, and the presence of orcinol depsides in their chemistry.
Habitat and distribution
Montanelia panniformis has a circumboreal distribution in Asia, Europe, and North America. It is widely distributed in Europe, having been reported in 23 countries there. In North America, its scattered range extends north to Alaska and the Northwest Territories. It is known from a single location in Baja California, Mexico. Although the lichen is typically saxicolous, in rare instances it has been recorded on bark or wood.
References
- "GSD Species Synonymy. Current Name: Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl., in Divakar, Del-Prado, Lumbsch, Wedin, Esslinger, Leavitt & Crespo, Am. J. Bot. 99(12): 2023 (2012)". Species Fungorum. Retrieved 18 January 2025.
- ^ Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 437. ISBN 978-0-300-08249-4.
- "Montanelia panniformis (Nyl.) Divakar, A. Crespo, Wedin & Essl". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 18 January 2025.
- Nylander, W. (1860). Synopsis Methodica Lichenum Omnium hucusque Cognitorum, Praemissa Introductione Lingua Gallica [Methodical Synopsis of All Known Lichens, Preceded by an Introduction in French] (in Latin). Vol. 1. pp. 141–430 .
- Esslinger, Theodore L. (1978). "A new status for brown Parmeliae". Mycotaxon. 7 (1): 45–54.
- ^ Divakar, Pradeep K.; Del-Prado, Ruth; Lumbsch, H. Thorsten; Wedin, Mats; Esslinger, Theodore L.; Leavitt, Steven D.; Crespo, Ana (2012). "Diversification of the newly recognized lichen-forming fungal lineage Montanelia (Parmeliaceae, Ascomycota) and its relation to key geological and climatic events". American Journal of Botany. 99 (12): 2014–2026. doi:10.3732/ajb.1200258.
- Leavitt, Steven D.; Divakar, Pradeep K.; Ohmura, Yoshihito; Wang, Li-song; Esslinger, Theodore L.; Lumbsch, H. Thorsten (2015). "Who's getting around? Assessing species diversity and phylogeography in the widely distributed lichen-forming fungal genus Montanelia (Parmeliaceae, Ascomycota)". Molecular Phylogenetics and Evolution. 90: 85–96. doi:10.1016/j.ympev.2015.04.029.
- ^ Esslinger, Theodore L. (2016). "Montanelia in Mexico". Lichens of Mexico. The Parmeliaceae – Keys, distribution and specimen descriptions. Bibliotheca Lichenologica. Vol. 110. Stuttgart: J. Cramer. pp. 280–281. ISBN 978-3-443-58089-6.
- Hawksworth, David L.; Blanco, Oscar; Divakar, Pradeep K.; Ahti, Teuvo; Crespo, Ana (2008). "A first checklist of parmelioid and similar lichens in Europe and some adjacent territories, adopting revised generic circumscriptions and with indications of species distributions". The Lichenologist. 40 (1): 1–21 . doi:10.1017/S0024282908007329.
- Hawksworth, David L.; Divakar, Pradeep K.; Crespo, Ana; Ahti, Teuvo (2011). "The checklist of parmelioid and similar lichens in Europe and some adjacent territories: additions and corrections". The Lichenologist. 43 (6): 639–645. doi:10.1017/S0024282911000454.
| Taxon identifiers | |
|---|---|
| Montanelia panniformis | |
| Parmelia olivacea var. panniformis | |
| Parmelia prolixa f. panniformis | |
| Imbricaria prolixa var. panniformis | |
| Parmelia panniformis | |
| Imbricaria olivacea var. panniformis | |
| Melanelia panniformis | |
| Imbricaria pannariiformis | |