Platismatia erosa: Difference between revisions
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'''''Platismatia erosa''''' is a species of [[corticolous lichen|corticolous]] (bark-dwelling), [[foliose lichen]] in the family [[Parmeliaceae]]. Found in [[Asia]], it was [[species description|formally described]] as a new species in 1968 by [[William Louis Culberson|William]] and [[Chicita Culberson]]. The [[botanical name|species epithet]] ''erosa'' refers to the "eroded" quality of the reticulations on the upper [[thallus]] surface.<ref name="Culberson & Culberson 1968 |
'''''Platismatia erosa''''' is a species of [[corticolous lichen|corticolous]] (bark-dwelling), [[foliose lichen]] in the family [[Parmeliaceae]]. Found in [[Asia]], it was [[species description|formally described]] as a new species in 1968 by [[William Louis Culberson|William]] and [[Chicita Culberson]]. The [[botanical name|species epithet]] ''erosa'' refers to the "eroded" quality of the reticulations on the upper [[thallus]] surface.<ref name="Culberson & Culberson 1968"/> |
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''Platismatia erosa'' reproduces primarily asexually through the production of [[isidia]], which are small outgrowths on the thallus surface. The lichen's upper thallus is light tan to ashy gray, becoming brown at the lobe margins, and has a broadly reticulately ridged and veined surface with [[pseudocyphella]]e (small pores). Its lower surface is black with a light brown marginal zone and is {{lichengloss|punctate}} (dotted). The lichen has few black [[rhizine]]s, which are {{lichengloss|simple}} to {{lichengloss|fasciculate}} and confined to older parts of the thallus.<ref name="Asher et al. 2023"/> |
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The lichen has been recorded from [[Japan]], [[Taiwan]], [[Java]], [[Vietnam]], [[Nepal]], the [[Philippines]], and [[Sikkim]], and [[Tibet]]. Chemical analysis of the lichen (using [[thin-layer chromatography]]) revealed two [[lichen product]]s previously unknown in genus ''[[Platismatia]]'', [[pannaric acid]] and [[jackinic acid]]. Two [[chemotype]]s of ''P. erosa'' have been identified, containing different proportions of these substances.<ref name="Obermayer & Randlane 2012"/> More recent chemical analysis has also identified [[atranorin]], [[caperatic acid]], and an unidentified yellow pigment in ''P. erosa''.<ref name="Asher et al. 2023"/> |
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[[Phylogenetic]] analysis has shown that ''P. erosa'' is closely related to ''P. norvegica'', with the two species forming a strongly supported sister relationship. [[Genetic distance]] studies support its status as a distinct species within the genus ''Platismatia''.<ref name="Asher et al. 2023"/> |
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==References== |
==References== |
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{{Reflist|refs= |
{{Reflist|refs= |
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<ref name="Asher et al. 2023">{{cite journal |last=Asher |first=Olivia A. |last2=Howieson |first2=John |last3=Lendemer |first3=James C. |title=A new perspective on the macrolichen genus ''Platismatia'' (Parmeliaceae, Ascomycota) based on molecular and phenotypic data |journal=The Bryologist |volume=126 |issue=1 |year=2023 |doi=10.1639/0007-2745-126.1.001 |pages=1–18}}</ref> |
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<ref name="Culberson & Culberson 1968">{{cite book |last1=Culberson |first1=William Louis |last2=Culberson |first2=Chicita F. |title=The Lichen Genera ''Cetrelia'' and ''Platismatia'' (Parmeliaceae) |location=Washington |publisher=Smithsonian Institution Press |year=1968 |series=Contributions from the United States National Herbarium |volume=34 |issue=7 |pages=449–558 [526] |url=https://www.biodiversitylibrary.org/page/399682}}</ref> |
<ref name="Culberson & Culberson 1968">{{cite book |last1=Culberson |first1=William Louis |last2=Culberson |first2=Chicita F. |title=The Lichen Genera ''Cetrelia'' and ''Platismatia'' (Parmeliaceae) |location=Washington |publisher=Smithsonian Institution Press |year=1968 |series=Contributions from the United States National Herbarium |volume=34 |issue=7 |pages=449–558 [526] |url=https://www.biodiversitylibrary.org/page/399682}}</ref> |
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[[Category:Taxa named by William Louis Culberson]] |
[[Category:Taxa named by William Louis Culberson]] |
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[[Category:Taxa named by Chicita F. Culberson]] |
[[Category:Taxa named by Chicita F. Culberson]] |
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{{Parmeliaceae-stub}} |
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Latest revision as of 15:07, 22 September 2024
| Platismatia erosa | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Lecanorales |
| Family: | Parmeliaceae |
| Genus: | Platismatia |
| Species: | P. erosa
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| Binomial name | |
| Platismatia erosa | |
Platismatia erosa is a species of corticolous (bark-dwelling), foliose lichen in the family Parmeliaceae. Found in Asia, it was formally described as a new species in 1968 by William and Chicita Culberson. The species epithet erosa refers to the "eroded" quality of the reticulations on the upper thallus surface.[1]
Platismatia erosa reproduces primarily asexually through the production of isidia, which are small outgrowths on the thallus surface. The lichen's upper thallus is light tan to ashy gray, becoming brown at the lobe margins, and has a broadly reticulately ridged and veined surface with pseudocyphellae (small pores). Its lower surface is black with a light brown marginal zone and is punctate (dotted). The lichen has few black rhizines, which are simple to fasciculate and confined to older parts of the thallus.[2]
The lichen has been recorded from Japan, Taiwan, Java, Vietnam, Nepal, the Philippines, and Sikkim, and Tibet. Chemical analysis of the lichen (using thin-layer chromatography) revealed two lichen products previously unknown in genus Platismatia, pannaric acid and jackinic acid. Two chemotypes of P. erosa have been identified, containing different proportions of these substances.[3] More recent chemical analysis has also identified atranorin, caperatic acid, and an unidentified yellow pigment in P. erosa.[2]
Phylogenetic analysis has shown that P. erosa is closely related to P. norvegica, with the two species forming a strongly supported sister relationship. Genetic distance studies support its status as a distinct species within the genus Platismatia.[2]
References
[edit]- ^ Culberson, William Louis; Culberson, Chicita F. (1968). The Lichen Genera Cetrelia and Platismatia (Parmeliaceae). Contributions from the United States National Herbarium. Vol. 34. Washington: Smithsonian Institution Press. pp. 449–558 [526].
- ^ a b c Asher, Olivia A.; Howieson, John; Lendemer, James C. (2023). "A new perspective on the macrolichen genus Platismatia (Parmeliaceae, Ascomycota) based on molecular and phenotypic data". The Bryologist. 126 (1): 1–18. doi:10.1639/0007-2745-126.1.001.
- ^ Obermayer, Walter; Randlane, Tiina (2012). "Morphological and chemical studies on Platismatia erosa (Parmeliaceae) from Tibet, Nepal and Bhutan". The Bryologist. 115 (1): 51–60. doi:10.1639/0007-2745-115.1.51.