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Placopsis lambii

Scientific classification
Domain:	Eukaryota
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Baeomycetales
Family:	Trapeliaceae
Genus:	Placopsis
Species:	P. lambii
Binomial name
*Placopsis lambii* Hertel & V.Wirth (1987)
Synonyms^[1]
Squamaria gelida f. dispersa Cromb. (1873)

Placopsis lambii is a species of saxicolous (rock-dwelling), crustose lichen in the family Trapeliaceae.^[2] It was formally described as a new species in 1987 by lichenologists Hannes Hertel and Volkmar Wirth. The species epithet lambii honours polar explorer and lichenologist Elke Mackenzie (formerly Lamb).^[3] In North America, one vernacular name for the lichen is pink bull's-eye lichen.^[4]

Placopsis lambii is distinguished by its placodioid thallus that features deeply notched and radiating edge lobes, a glossy upper surface, typically dark and somewhat rounded soralia, and non-lobate cephalodia that may be absent in certain samples. This species predominantly produces 5-O-methylhiascic and gyrophoric acids.^[5]

Placopsis lambii has a widespread but scattered distribution. It has been recorded from many countries in Europe, Africa (Kenya, Lesotho, and Tanzania), South America (Bolivia, Chile), Central America (Costa Rica, Ecuador), New Zealand, and Asian Russia.^[5]

References

^ "Synonymy. Current Name: Placopsis lambii Hertel & V. Wirth, in Wirth, Die Flecht. Baden-Württembergs. Verbreitungsatlas (Stuttgart): 511 (1987)". Species Fungorum. Retrieved 18 October 2023.
^ "Placopsis lambii Hertel & V. Wirth". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 18 October 2023.
^ Wirth, V. (1987). Die Flechten Baden-Württembergs. Verbreitungsatlas (in German). Stuttgart: Eugen Ulmer. p. 511. ISBN 978-3-8001-3305-5.
^ Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 572. ISBN 978-0-300-08249-4.
^ ^a ^b Kukwa, M.; Łubek, A.; Szymczyk, R.; Zalewska, A. (2012). "Seven lichen species new to Poland". Mycotaxon. 120: 105–118. doi:10.5248/120.105.

Taxon identifiers
Placopsis lambii	Wikidata: Q10430950 Wikispecies: Placopsis lambii AusLichen: 30019227 BioLib: 357895 GBIF: 5260407 iNaturalist: 463790 IndexFungorum: 132762 IRMNG: 11331477 MycoBank: 132762 NatureServe: 2.1038420 NBN: NHMSYS0001493895 NCBI: 223400 NZOR: 444f9a62-dddb-4fe5-b169-a52e61dfd55d Observation.org: 18165 Open Tree of Life: 258216 SpeciesFungorum: 132762

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