''Lepidocollema marianum'' is a species of cyanolichen in the family

Pannariaceae The Pannariaceae are a family of lichens in the order Peltigerales (suborder Collematineae). Species from this family have a widespread distribution, but are especially prevalent in southern temperate regions. Genera According to a recent (202 ...

. It was first scientifically described by Elias Fries in 1825 as ''Parmelia mariana''. Per Magnus Jørgensen transferred it to the genus ''

Lepidocollema ''Lepidocollema'' is a genus of lichens in the family Pannariaceae. It was circumscribed in 1890 to contain a single Brazilian species that has not been collected since. In 2016, the entire family was revised and updated, resulting in the expansi ...

'' in 2014 following a

molecular phylogenetics Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

-guided revision of the Pannariaceae. The lichen has a growth form that is both

squamulose A squamulose lichen is a lichen that is composed of small, often overlapping "scales" called squamules. If they are raised from the substrate and appear leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "skin ...

(scaley) and foliose (leafy), with lobes around the margins and squamules in the centre of the

thallus Thallus (plural: thalli), from Latinized Greek (), meaning "a green shoot" or "twig", is the vegetative tissue of some organisms in diverse groups such as algae, fungi, some liverworts, lichens, and the Myxogastria. Many of these organisms wer ...

. It is firmly attached to the underlying substratum by root-like rhizines, which are brown to black in colour; the hypothallus is also black. ''Lepidocollema marianum'' occurs in Asia (including Thailand, Sri Lanka, and Taiwan) and

Mauritius Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It incl ...

References

Pannariaceae Lichen species Lichens described in 1825 Lichens of Asia Lichens of Mauritius Taxa named by Elias Magnus Fries {{Peltigerales-stub