''Parmotrema aptrootii'' is a species of

corticolous lichen A corticolous lichen is a lichen that grows on bark.Alan Silverside's Lichen Glossary (a-f), Alan Silverside/ref> This is contrasted with lignicolous lichen, which grows on wood that has had the bark stripped from it,Alan Silverside's Lichen Glos ...

in the family

Parmeliaceae The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2700 species in 71 genera, it is the largest family of lichen-forming fungi. The most speciose genera in the family are the well-known groups: '' Xanthoparmelia'' ( 822 ...

. Found in South America, it was described as new to science in 1992. The

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...

specimen was collected in the

Cuyuni-Mazaruni Cuyuni-Mazaruni (Region 7) is a region of Guyana. Venezuela claims the territory as part of Guayana Esequiba. It borders the regions of Barima-Waini, Essequibo Islands-West Demerara and Pomeroon-Supenaam to the north, the region of Upper Demera ...

region of

Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...

, where it was found growing on a

Mahogany Mahogany is a straight-grained, reddish-brown timber of three tropical hardwood species of the genus ''Swietenia'', indigenous to the AmericasBridgewater, Samuel (2012). ''A Natural History of Belize: Inside the Maya Forest''. Austin: Unive ...

tree on the bank of the

Kamarang River Kamarang River is a river in Venezuela and Guyana, and a part of the Essequibo River basin. Route The river originates in Venezuela where it is called Río Camarán or Río Camurán. Its source is located right next to the Troncal 10, in the mid ...

. It has a pale yellowish to greenish-grey

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 ...

measuring up to about . The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

honours Dutch lichenologist

André Aptroot André Aptroot (Heemskerk, 1961) is a Dutch mycologist and lichenologist. In 1993 he did his PhD at the University of Utrecht under the supervision of Robbert Gradstein (nl). His dissertation was titled "Systematic studies on pyrenocarpous li ...

. The lichen has also been recorded from

Acre, Brazil Acre () is a state located in the west of the North Region of Brazil and the Amazonia Legal. Located in the westernmost part of the country, at a two-hour time difference from Brasília, Acre is bordered clockwise by the Brazilian states of Am ...

, where it is commonly found on dead branches in dense shrubby

campinas Campinas (, ''Plains'' or ''Meadows'') is a Brazilian municipality in São Paulo State, part of the country's Southeast Region. According to the 2020 estimate, the city's population is 1,213,792, making it the fourteenth most populous Brazilian ...

References

aptrootii Lichen species Lichens described in 1992 Lichens of North Brazil Lichens of Guyana {{Parmeliaceae-stub

See also

References