Placopsis perrugosa

Placopsis perrugosa
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Baeomycetales
Family:	Trapeliaceae
Genus:	Placopsis
Species:	P. perrugosa
Binomial name
	Placopsis perrugosa; (Nyl.) Nyl. (1867)
Synonyms
	Lecanora perrugosaNyl. (1867); Placodium perrugosum(Nyl.) Müll.Arg. (1889); Squamaria perrugosaNyl. (1875);

Last updated February 01, 2026

Placopsis perrugosa is a saxicolous (rock-dwelling), placodioid lichen in the family Trapeliaceae.^[2] It was formally described as a new species in 1867 by Finnish lichenologist William Nylander, originally as a member of the genus Lecanora .^[3]

After the retreat of the Glaciar Frías in the Patagonian Andes, Argentina, Placopsis perrugosa dominated the pioneer stage on newly exposed rock outcrops. This was followed by a mid-successional stage, in which a lichen-moss mat was dominated by the moss Racomitrium lanuginosum , providing the foundation for a larger diversity of vascular plants in the final successional stage.^[4] Like other members of genus Placopsis , P. perrugosa is a fast-growing crustose lichen; this allows them to dominate as early colonisers on snow-free moraines of exposed land surfaces.^[5]

References

↑ "Synonymy. Current Name: Placopsis perrugosa (Nyl.) Nyl., J. Linn. Soc., Bot. 9: 251 (1867)". Species Fungorum . Retrieved 25 August 2022.
↑ What is a lichen?, Australian National Botanical Garden
↑ Nylander, W. (1867). "Lichenes Novae Zelandiae, quos ibi legit anno 1861 Dr. Lauder Lindsay". Journal of the Linnean Society. Botany (in Latin). 9: 244–259 [250].
↑ Garibotti, Irene A.; Pissolito, Clara I.; Villalba, Ricardo (2011). "Vegetation development on deglaciated rock outcrops from Glaciar Frías, Argentina". Arctic, Antarctic, and Alpine Research. 43 (1): 35–45. doi: 10.1657/1938-4246-43.1.35 .
↑ Raggio, J.; Green, T.G.A.; Crittenden, P.D.; Pintado, A.; Vivas, M.; Pérez-Ortega, S.; De los Ríos, A.; Sancho, L.G. (2012). "Comparative ecophysiology of three Placopsis species, pioneer lichens in recently exposed Chilean glacial forelands". Symbiosis. 56 (2): 55–66. doi:10.1007/s13199-012-0159-1.

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[Species_Fungorum_synonymy-1] "Synonymy. Current Name: Placopsis perrugosa (Nyl.) Nyl., J. Linn. Soc., Bot. 9: 251 (1867)". Species Fungorum . Retrieved 25 August 2022.

[WIL-2] What is a lichen?, Australian National Botanical Garden

[Nylander_1867-3] Nylander, W. (1867). "Lichenes Novae Zelandiae, quos ibi legit anno 1861 Dr. Lauder Lindsay". Journal of the Linnean Society. Botany (in Latin). 9: 244–259 [250].

[Garibotti_et_al._2011-4] Garibotti, Irene A.; Pissolito, Clara I.; Villalba, Ricardo (2011). "Vegetation development on deglaciated rock outcrops from Glaciar Frías, Argentina". Arctic, Antarctic, and Alpine Research. 43 (1): 35–45. doi: 10.1657/1938-4246-43.1.35 .

[Raggio_et_al._2012-5] Raggio, J.; Green, T.G.A.; Crittenden, P.D.; Pintado, A.; Vivas, M.; Pérez-Ortega, S.; De los Ríos, A.; Sancho, L.G. (2012). "Comparative ecophysiology of three Placopsis species, pioneer lichens in recently exposed Chilean glacial forelands". Symbiosis. 56 (2): 55–66. doi:10.1007/s13199-012-0159-1.

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