Species of lichen
 ;templatestyles src="Template:Taxobox/core/styles.css" / ;
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 ;dfn id="" ;lobes ;/dfn ;, and a tightly overlapping ( ;dfn id="" ;imbricate ;/dfn ;) 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 ;dfn id="" ;parmelioid ;/dfn ; lichens such as "Melanelia", "Melanohalea", and "Melanelixia", "Montanelia" species are characterised by having short narrow ;dfn id="" ;lobes ;/dfn ; with plane to convex margins, flat ;dfn id="" ;effigurate ;/dfn ; 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.
 ;templatestyles src="Reflist/styles.css" / ;