Biology:Punctelia

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Short description: Genus of foliose lichens

Punctelia
Punctelia borreri (26167464298).jpg
Punctelia borreri
Scientific classification e
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Punctelia
Krog (1982)
Type species
Punctelia borreri
(Sm.) Krog (1982)
Species

See text

Punctelia is a genus of foliose lichens belonging to the large family Parmeliaceae. The genus, which contains about 50 species, was segregated from genus Parmelia in 1982. Characteristics that define Punctelia include the presence of hook-like to thread-like conidia (asexual spores), simple rhizines (root-like structures that attach the lichen thallus to its substrate), and point-like pseudocyphellae (tiny pores on the thallus surface that facilitate gas exchange). It is this last feature that is alluded to in the vernacular names speckled shield lichens or speckleback lichens.

Punctelia lichens grow on bark, wood, and rocks. The genus has a worldwide distribution, occurring on all continents but Antarctica. Species are found in temperate to subtropical locations. Punctelia has centres of distribution in the Neotropics and Africa; about half of the known species occur in South America. The photobiont partners of Punctelia are green algae in the genus Trebouxia. Some pollution-sensitive Punctelia species have been proposed for use as bioindicators of air pollution.

Systematics

Norwegian lichenologist Hildur Krog circumscribed Punctelia in 1982. Originally, the genus contained 22 species segregated from Parmelia based on differences in the development of the pseudocyphellae, secondary chemistry, and phytogeography. The earliest-published member of this group, Parmelia borreri, was assigned as the type species of the genus.[1] This widely distributed lichen was first described by James Edward Smith in 1807,[2] followed by Dawson Turner in 1808.[3]

Before Krog's publication, species with point-like pseudocyphellae, known as the Parmelia borreri group, fell under Parmelia subgenus Parmelia, section Parmelia, subsection Simplices.[4] Krog divided Punctelia into two subgenera: Punctelia subgenus Punctelia, with hook-shaped (unciform) conidia and atranorin as a major cortical substance, and Punctelia subgenus Flavopunctelia, with bifusiform conidia and usnic acid as a major cortical substance.[1] Mason Hale later identified Flavopunctelia as a separate genus with four species, based on conidial shape and chemical traits.[5] A 2005 molecular phylogenetic analysis confirmed their genetic independence from Parmelia, and established genus boundaries.[6]

In North America, these lichens are commonly known as "speckled shield lichens" or "speckleback lichens".[7] The genus name, derived from the Latin punctum ("small spot" or "dot") refers to the pseudocyphellae.[8]

Phylogenetics

 
 
 
 
 
 
A
 

P. guanchica

 
 

P. rudecta

 
 
 

P. toxodes

 
 
B
 
 
 

P. missouriensis

 
 

P. aff rudecta

 
 
 

P. ruderata

 
 
 
 

P. perreticulata

 
 

P. subrudecta

 
 
 
 
C
 
 

P. jeckeri

 
 

P. caseana

 
 
 

P. pseudocoralloidea

 
 
 
D
 

P. bolliana

 
 

P. appalachensis

 
 
 
 

P. hypoleucites

 
 
E
 
 
 
 

P. borreri

 
 

P. subpraesignis

 
 
 

P. reddenda

 
 
 
 

P. stictica

 
 
 
Phylogeny of Punctelia, using sequences from about a third of its species. Letter labels on the lines correspond to the five monophyletic clades recognized in Punctelia.[9]

Punctelia is a member of the large lichen family Parmeliaceae.[10] In 2017, Pradeep Divakar and colleagues applied a "temporal phylogenetic" approach to define taxonomic ranks within Parmeliaceae, inferring that groups of species diverging 29.45–32.55 million years ago signify distinct genera. They suggested synonymizing the lichenicolous genus Nesolechia with Punctelia (its lichen-forming sister group), because Nesolechia's relatively recent origin falls within their timeframe threshold for genus classification.[11] This synonymy was not accepted in a review of Parmeliaceae classification soon afterwards. Although the authors (Arne Thell, Ingvar Kärnefelt, and Mark Seaward) recognized Nesolechia's place in Parmeliaceae and its morphological reduction in Punctelia, they suggest that "since the parasitic genera appear as sister groups ... synonymization feels hardly necessary".[12] Robert Lücking, critiquing the temporal phylogenetic method, also dismissed the proposed synonymy, stating that merging genera based solely on divergence time does not align with taxonomy's need to mirror evolutionary history.[13]

Molecular phylogenetics analysis has refined Punctelia species identification, uncovering many cryptic species – a growing research trend in Parmeliaceae research.[14] For Punctelia, P. rudecta was once considered to be globallly distributed acorss the Americas, Africa, and Asia. Phylogenetic analysis revealed a species complex that has subsequently been split into four distinct cryptic lineages with more restricted distributional ranges, reducing P. rudecta's range to North America. This study also uncovered five Punctelia clades, each with unique medullary chemistry: clades A, B, and C have species with lecanoric acid, clade D has species with gyrophoric acid as the main compound, while clade E has two species with fatty acids as the main secondary chemical.[9]

Description

Herbarium specimen of Punctelia rudecta showing rounded pseudocyphellae on a lobe.

Punctelia lichens are medium-sized, foliose (leafy), and grey to greyish-green,[7] although collected specimens gradually lose their colour tone.[9] The size range for most typical specimens is 4 to 20 cm (1 1⁄2 to 7 3⁄4 in) in diameter.[8] The lobes that comprise the thallus are typically 3–10 mm (1⁄8–3⁄8 in) across. The medulla is white, while the lower surface ranges from pale to black. Simple, unbranched rhizines are present that extend to the edge of the lobe;[7] they are usually more or less the same colour as the thallus underside, although individuals with light rhizines on a dark background are not unusual.[1]

A major characteristic of Punctelia is the presence of point-like (punctate) pseudocyphellae on the surface of the thallus. These are tiny pores that facilitate gas exchange. In the genus Parmelia, pseudocyphellae are straight and without a distinct form, and typically situated on the thallus surface (laminal) and/or on the margins (marginal). In comparison, Punctelia pseudocyphellae are rounded (orbicular) and laminal, although in some species the cortex gets pushed around the edges of the thallus, giving them a marginal appearance. Electron microscopy of Parmelia pseudocyphellae reveals a perforated polysaccharide layer; this layer is absent in Punctelia.[1] Pseudocyphellae are termed conspicuous when they can be viewed with the naked eye, inconspicuous when a hand lens or microscope is needed to see them, and subtle for intermediate states where they can be seen only with concerted effort.[15]

The apothecia (sexual reproductive structures) are lecanorine, with brown discs. Ascospores are colourless, ellipsoid, and number eight per ascus;[7] they range in size from 10–27 to 6–18 μm.[8] The unciform (hook-like) shape of the conidia is another major characteristic of genus Punctelia. These are short rods measuring 4–7 μm long with one end curved. Although not all Punctelia species have unciform conidia, this conidial shape only occurs in Punctelia.[1] Some species have filiform (threadlike) conidia that are in the size range 7–12 μm long by 0.8–1 μm wide.[8] The size and shape of the conidia is an important character in some species; for example, P. graminicola and P. hypoleucites are morphologically indistinguishable from each other, and they can only be reliably identified by differences in their conidia.[16] Cell walls of Punctelia lichens contain the alpha glucan polysaccharide isolichenan.[8]

Other Parmeliaceae genera that are superficially similar to Punctelia and have pseudocyphellae are Flavopunctelia and Cetrelia. Flavopunctelia species tend to be yellower than Punctelia due to the presence of usnic acid in the cortex. Cetrelia is usually larger with lobes measuring 1–2 cm (3⁄8–13⁄16 in), a dark lower thallus surface, and few rhizines.[7]

Secondary chemicals found in the genus include atranorin in the cortex, and gyrophoric acid in the medulla.[1] Lecanoric acid has been detected as a minor component in Punctelia jujensis and P. subrudecta.[17]

Photobiont

Most lichen genera associate with a photobiont partner from one algal genus.[18] Punctelia is no exception to this general rule; it associates with species from the most common photobiont genus, Trebouxia. In a study of photobiont partner selectivity, Punctelia subrudecta specimens collected from central Europe were shown to have a moderate selectivity, associating with three species of Trebouxia: T. jamesii, T. arboricola, and T. gelatinosa (the latter most frequently).[18] The photobiont partner for P. rudecta is Trebouxia anticipata.[19]

An investigation centred on the lichen species Punctelia borreri and P. subrudecta, which are prominent in Europe's temperate and Mediterranean forest ecosystems, confirmed that these fungi predominantly collaborate with Trebouxia gelatinosa. This symbiotic relationship appears to be influenced by the diverse climates of the Iberian Peninsula. While each Punctelia species has unique associations with specific microalgal lineages, some photobiont lineages are common to both. These shared lineages seem to be region-specific, hinting at a potential influence of local climate on these fungal-algal interactions.[20]

Habitat and distribution

Punctelia lichens are generally found on bark, wood, and rocks.[7] However, P. constantimontium and P. subpraesignis have been recorded utilising cement mortar as a growing surface in Verónica, Buenos Aires.[21] In the biodiverse cerrado forests of Brazil, they are more or less limited to well-lit microhabitats without direct sunlight.[22] They have a temperate to subtropical distribution with centers of distribution in the Neotropics and Africa.[9] Rarely does the geographical range of Punctelia species extend to boreal and cold mountainous areas; an exception is Punctelia stictica,[23] which has been recorded in Greenland.[24] Collectively, the genus has a cosmopolitan distribution,[8] occurring on all continents, with the exception of Antarctica.[9] Only a few species are known to occur in Asia and Australia; in contrast, most Parmelia species occur in these regions.[1] Five species are known from Australia, including two cosmopolitan species and three endemic Australasian species.[8] Sixteen Punctelia species occur in the continental United States and Canada.[25] About half of the known Punctelia species are found in Brazil.[22] Revised accounts of the genus have been published for several European countries in recent decades, including Norway (2000),[26] Switzerland (2003),[27] Denmark (2007),[28] Lithuania (2010),[29] and Poland.[23] Seven species occur in Europe.[30][31]

Conservation

(As of October 2023), only a single species of Punctelia has been assessed for the global IUCN Red List. Because it has an abundant and widespread population in North America with no sign of decline, Punctelia caseana is considered a species of least concern.[32]

Species

Punctelia appalachensis
Punctelia guanchica
Punctelia jeckeri
Punctelia rudecta

A recent (2022) estimate places 48 species in the genus Punctelia.[10] (As of October 2023), Species Fungorum accepts 30 species of Punctelia.[33]

The species Punctelia pallescens, described by Syo Kurokawa in 1999 as a new species from western Australia,[39] is considered synonymous with P. subalbicans.[55] Parmelia helenae, described by Maurice Bouly de Lesdain in 1937[56] and transferred to Punctelia in 1998,[57] was considered by some lichenologists to be a questionable taxon because, according to Teuvo Ahti, "the type material is insufficient to resolve its taxonomic relationship with Punctelia perrituculata ... and P. subrudecta ... on the basis of conidial characters".[57] It is now placed in synonymy with P. subrudecta.[1][30] Punctelia semansiana (W.L.Culb. & C.F.Culb.) Krog is the same species as Punctelia graminicola.[42]

Parasites

Many species of lichenicolous fungi have been recorded using Punctelia as a host. These include: Abrothallus parmeliarum, Didymocyrtis melanelixiae, Epithamnolia xanthoriae, Lichenoconium usneae, Llimoniella bergeriana, Lichenohendersonia uniseptata, Nesolechia oxyspora, Pronectria oligospora, Pyrenidium sp., Rinodina conradii, Sphaerellothecium reticulatum, Tremella parmeliarum, Trichosphaerella buckii, and Xenonectriella subimperspicua. One of these fungal parasites—Xenophoma puncteliae—is named after its host's genus.[58][59]

Human uses

Biomonitoring

Some members of Punctelia have been shown to be somewhat sensitive to air pollution. One research study identified apparent signs of damage on thalli in areas potentially affected by air pollution. The researchers suggested that the distinctive colour changes seen on Punctelia thalli could result from pollutants affecting the thylakoid membranes of the trebouxioid algae. This disturbance might cause the release of K+ ions, which then interact with lichen compounds, leading to these coloured markings.[20] A study conducted in Spain observed Punctelia borreri and P. subrudecta reappearing in areas with a decline in SO2 pollution.[60] Two Punctelia species have been recommended for use as element bioindicators in air pollution monitoring studies in the eastern United States. Punctelia rudecta is suggested for use in cooler forested uplands, and P. missouriensis for use in isolated woodlands or urban areas.[61] Because of the widespread occurrence of P. hypoleucites in both urban and industrial sites in and around Tandil, Argentina, it has been proposed as a potential biomonitor of air pollution in that city.[62]

Traditional medicine

Punctelia borreri has been used in traditional Chinese medicine as an alleged remedy for a variety of ailments, including chronic dermatitis, blurred vision, bleeding from the uterus or from external injuries, and for sores and swelling. To use, a decoction was drunk, or the dried and powdered lichen applied directly to the affected area.[63]

Dyeing

Punctelia rudecta can be used to create a dye by a color-extraction with ammonia as a solvent. A pink color is obtained using this method.[64]

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 Krog, Hildur (1982). "Punctelia, a new lichen genus in the Parmeliaceae". Nordic Journal of Botany 2 (3): 287–292. doi:10.1111/j.1756-1051.1982.tb01191.x. 
  2. ↑ Smith, James Edward (1807). English Botany. 25. London: R. Taylor. p. 1780. https://bibdigital.rjb.csic.es/viewer/11328/?offset=#page=102&viewer=picture&o=bookmark&n=0&q=. 
  3. ↑ Turner, Dawson (1808). "Descriptions of eight new British lichens". Transactions of the Linnean Society of London 9: 135–150; tab. 13, fig. 2. doi:10.1111/j.1096-3642.1818.tb00332.x. https://www.biodiversitylibrary.org/page/757900. 
  4. ↑ Hale, Mason E.; Kurokawa, Syo (1964). "Studies on Parmelia subgenus Parmelia". Contributions from the United States National Herbarium: 121–192. https://repository.si.edu/bitstream/handle/10088/27103/usnh_0036.04.pdf?sequence=1&isAllowed=y.  open access
  5. ↑ Hale Jr, Mason E. (1983). "Flavopunctelia, a new genus in the Parmeliaceae (Ascomycotina)". Mycotaxon 20 (2): 681–682. http://www.cybertruffle.org.uk/cyberliber/59575/0020/002/0681.htm. 
  6. ↑ Thell, Arne; Herber, B.; Aptroot, A.; M.T., Adler; T., Feuerer; Kärnefelt, E.I. (2005). "A preliminary phylogeographic study of Flavopunctelia and Punctelia inferred from rDNA ITS-sequences". Folia Cryptogamica Estonica 41: 115–122. https://core.ac.uk/download/pdf/159296002.pdf. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. pp. 605–606. ISBN 978-0300082494. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 8.6 Elix, John A. (1994). "Punctelia". Lichens—Lecanorales 2, Parmeliaceae. Flora of Australia. 55. Canberra: Australian Biological Resources Study/CSIRO Publishing. ISBN 978-0-643-05676-3. https://www.anbg.gov.au/abrs/lichenlist/PUNCTELIA%20Genus%20and%20key.pdf. 
  9. ↑ 9.0 9.1 9.2 9.3 9.4 9.5 Alors, David; Lumbsch, H. Thorsten; Divakar, Pradeep K; Leavitt, Steven D.; Crespo, Ana (2016). "An integrative approach for understanding diversity in the Punctelia rudecta species complex (Parmeliaceae, Ascomycota)". PLOS ONE 11 (2): 1–17. doi:10.1371/journal.pone.0146537. PMID 26863231. Bibcode: 2016PLoSO..1146537A.  open access
  10. ↑ 10.0 10.1 Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-García, M.; Goto, B.T.; Saxena, R.K. et al. (2022). "Outline of Fungi and fungus-like taxa – 2021". Mycosphere 13 (1): 53–453. doi:10.5943/mycosphere/13/1/2. https://www.researchgate.net/publication/358798332. 
  11. ↑ Divakar, Pradeep K.; Crespo, Ana; Kraichak, Ekaphan; Leavitt, Steven D.; Singh, Garima; Schmitt, Imke; Lumbsch, H. Thorsten (2017). "Using a temporal phylogenetic method to harmonize family- and genus-level classification in the largest clade of lichen-forming fungi". Fungal Diversity 84: 101–117. doi:10.1007/s13225-017-0379-z. 
  12. ↑ Thell, Arne; Kärnefelt, Ingvar; Seaward, Mark D. (2018). "Splitting or synonymizing – genus concept and taxonomy exemplified by the Parmeliaceae in the Nordic region". Graphis Scripta 30 (6): 130–137. ISSN 2002-4495. https://portal.research.lu.se/portal/files/46184476/GS_30_130.pdf. 
  13. ↑ Lücking, Robert (2019). "Stop the abuse of time! Strict temporal banding is not the future of rank-based classifications in Fungi (including lichens) and other organisms". Critical Reviews in Plant Sciences 38 (3): 199–253. doi:10.1080/07352689.2019.1650517. 
  14. ↑ Crespo, Ana; Lumbsch, H. Thorsten (2010). "Cryptic species in lichen-forming fungi". IMA Fungus 1 (2): 167–170. doi:10.5598/imafungus.2010.01.02.09. PMID 22679576. 
  15. ↑ 15.0 15.1 Canêz, Luciana; Marcelli, Marcelo (2010). "The Punctelia microsticta-group (Parmeliaceae)". The Bryologist 113 (4): 728–738. doi:10.1639/0007-2745-113.4.728. 
  16. ↑ Culberson, William Louis; Culberson, Chicita F. (1980). "Microconidial dimorphism in the lichen genus Parmelia". Mycologia 72 (1): 127–135. doi:10.1080/00275514.1980.12021161. http://www.cybertruffle.org.uk/cyberliber/59350/0072/001/0127.htm. 
  17. ↑ Thell, Arne; Elix, John A.; Feuerer, Tassilo; Hansen, Eric Steen; Kärnfeldt, Ingvar; Schüler, Nikolaus; Westberg, Martin (2008). "Notes on the systematics, chemistry and distribution of European Parmelia and Punctelia species (lichenized Ascomycetes)". Sauteria 15: 545–559. https://www.zobodat.at/pdf/Sauteria_15_0545-0559.pdf. 
  18. ↑ 18.0 18.1 Honegger, R. (2008). "Morphogenesis". Lichen Biology (2nd ed.). Cambridge University Press. p. 73. doi:10.1017/CBO9780511790478.006. ISBN 978-0-511-79047-8. 
  19. ↑ Bubrick, Paul (1988). "Methods for cultivating lichens and isolated bionts". CRC Handbook of Lichenology. III. Boca Raton: CRC Press. p. 134. ISBN 978-0-8493-3583-9. 
  20. ↑ 20.0 20.1 Garrido-Benavent, Isaac; Mora-Rodríguez, María Reyes; Chiva, Salvador; Fos, Simon; Barreno, Eva (2023). "Punctelia borreri and P. subrudecta (Parmeliaceae) associate with a partially overlapping pool of Trebouxia gelatinosa lineages". The Lichenologist 55 (5): 389–399. doi:10.1017/s0024282923000269. 
  21. ↑ Rosato, Vilma G. (2006). "Diversity and distribution of lichens on mortar and concrete in Buenos Aires Province, Argentina". Darwiniana 44 (1): 89–97. https://www.researchgate.net/publication/26505871. 
  22. ↑ 22.0 22.1 22.2 22.3 22.4 22.5 Marcelli, Marcelo Pinto; Jungbluth, Patrícia; Elix, John A. (2009). "Four new species of Punctelia from São Paulo State, Brazil". Mycotaxon 109: 49–61. doi:10.5248/109.49. 
  23. ↑ 23.0 23.1 Szymczyk, Rafał; Zalewska, Anna; Szydłowska, Justyna; Kukwa, Martin (2015). "The lichen family Parmeliaceae in Poland. IV. The genus Punctelia". Herzogia 28 (2): 556–566. doi:10.13158/heia.28.2.2015.556. 
  24. ↑ Kristinsson, Hörður; Zhurbenko, Mikhail; Steen Hansen, Eric (July 2010). Panarctic checklist of lichens and lichenicolous fungi. CAFF Technical Report No. 20 (Report). CAFF International Secretariat. pp. 14, 82. https://oaarchive.arctic-council.org/handle/11374/200. 
  25. ↑ Esslinger, Theodore L. (19 September 2019). "A Cumulative Checklist for the Lichen-forming, Lichenicolous and Allied Fungi of the Continental United States and Canada, Version 23". https://www.ndsu.edu/pubweb/~esslinge/chcklst/chcklst7.htm. 
  26. ↑ Gauslaa, Y. (2000). "Punctelia ulophylla new to Norway". Graphis Scripta 12: 12–14. 
  27. ↑ Truong, Camille; Clerc, Philippe (2003). "The Parmelia borreri group (lichenized ascomycetes) in Switzerland". Botanica Helvetica 113 (1): 49–61. https://www.researchgate.net/publication/234167399. 
  28. ↑ Christensen, S.N.; Søchting, U. (2007). "Notes on the genus Punctelia in Denmark". Graphis Scripta 19: 13–16. 
  29. ↑ Kukwa, Martin; Motiejūnaitė, Jurga (2012). "Revision of the genera Cetrelia and Punctelia (Lecanorales, Ascomycota) in Lithuania, with implications for their conservation". Herzogia 25 (1): 5–14. doi:10.13158/heia.25.1.2010.5. 
  30. ↑ 30.0 30.1 Hawksworth, David L.; Blanco, Oscar; Divakar, Pradeep K.; Ahti, Teuvo; Crespo, Ana (2008). "A first checklist of parmelioid and similar lichens in Europe and some adjacent territories, adopting revised generic circumscriptions and with indications of species distributions". The Lichenologist 40 (1): 1–21. doi:10.1017/S0024282908007329. 
  31. ↑ Hawksworth, David L.; Divakar, Pradeep K.; Crespo, Ana; Ahti, Teuvo (2011). "The checklist of parmelioid and similar lichens in Europe and some adjacent territories: Additions and corrections". The Lichenologist 43 (6): 639–645. doi:10.1017/S0024282911000454. 
  32. ↑ Scott, T. (10 February 2021). "Punctelia caseana". The IUCN Red List of Threatened Species 2021. https://www.iucnredlist.org/species/194662148/194678174. 
  33. ↑ Source dataset. Species Fungorum Plus: Species Fungorum for CoL+. "Punctelia". Catalog of Life Version 2021-04-05. https://www.catalogueoflife.org/data/taxon/75G4. 
  34. ↑ Lendemer, James C.; Hodkinson, Brendan P. (2011). "A new perspective on Punctelia subrudecta (Parmeliaceae) in North America: previously rejected morphological characters corroborate molecular phylogenetic evidence and provide insight into an old problem". Lichenologist 42 (4): 405–421. doi:10.1017/S0024282910000101. 
  35. ↑ Nash, T.H. III; Ryan, B.D.; Diederich, P.; Gries, C.; Bungartz, F. (2004). Lichen Flora of the Greater Sonoran Desert Region. 2. Tempe: Lichens Unlimited, Arizona State University. p. 432. ISBN 978-0-9716759-1-9. 
  36. ↑ 36.0 36.1 Egan, Robert S.; Lendemer, James (2016). "Punctelia in Mexico". Lichens of Mexico. The Parmeliaceae – Keys, distribution and specimen descriptions. Bibliotheca Lichenologica. 110. Stuttgart: J. Cramer. pp. 453–480. ISBN 978-3-443-58089-6. 
  37. ↑ Sérusiaux, Emmanuël (1984). "Punctelia colombiana sp. nov. (Parmeliaceae) from South America". Nordic Journal of Botany 4 (5): 717–718. doi:10.1111/j.1756-1051.1984.tb01998.x. 
  38. ↑ Sérusiaux, Emmanuël (1983). "New data on the lichen genus Punctelia (Parmeliaceae)". Nordic Journal of Botany 3 (4): 517–520. doi:10.1111/j.1756-1051.1983.tb01461.x. 
  39. ↑ 39.0 39.1 39.2 Kurokawa, S. (1999). "Notes on Flavopunctelia and Punctelia (Parmeliaceae), with descriptions of four new species". Bulletin of the Botanical Garden of Toyama 4: 25–32. 
  40. ↑ Hodkinson, Brendan P.; Lendemer, James C. (2011). "Punctelia eganii, a new species in the P. rudecta group with a novel secondary compound for the genus". Opuscula Philolichenum 9: 35–38. https://www.researchgate.net/publication/265155405. 
  41. ↑ 41.0 41.1 Canêz, Luciana S.; Marcelli, Marcelo P. (2007). "Two new species of Punctelia from southern Brazil". Mycotaxon 99: 211–216. http://www.cybertruffle.org.uk/cyberliber/59575/0099/0211.htm. 
  42. ↑ 42.0 42.1 Egan, Robert S. (2003). "What is the lichen Parmelia graminicola B. de Lesd.?". The Bryologist 106 (2): 314–316. doi:10.1639/0007-2745(2003)106[0314:WITLPG2.0.CO;2]. 
  43. ↑ Adler, Mónica T. (1998). "Two new species in Parmeliaceae (Lichenized ascomycotina) and new records for Argentina". Mycotaxon 35 (2): 399–404. http://www.cybertruffle.org.uk/cyberliber/59575/0035/002/0399.htm. 
  44. ↑ Wilhelm, Gerould; Ladd, Douglas (1992). "A new species of the lichen genus Punctelia from the Midwestern United States". Mycotaxon 44 (2): 495–504. http://www.cybertruffle.org.uk/cyberliber/59575/0044/002/0495.htm. 
  45. ↑ Marcelli, Marcelo P.; Canêz, Luciana da Silva; Benatti, Michel Navarro; Spielmann, Adriano A.; Jungbluth, Patricia; Elix, John A. (2011). "Taxonomical novelties in Parmeliaceae". Bibliotheca Lichenologica 106: 211–224. https://www.researchgate.net/publication/235224715. 
  46. ↑ 46.0 46.1 46.2 Elix, John A.; Johnston, Jen (1988). "New species in the lichen family Parmeliaceae (Ascomycotina) from the southern hemisphere". Mycotaxon 31 (2): 491–510. http://www.cybertruffle.org.uk/cyberliber/59575/0031/002/0491.htm. 
  47. ↑ Canêz, Luciana da Silva; Marcelli, Marcelo P. (2010). "Punctelia osorioi, a new species of Parmeliaceae from South Brazil". Mycotaxon 111: 45–49. doi:10.5248/111.45. https://www.researchgate.net/publication/233626112. 
  48. ↑ Wilhelm, Gerould; Ladd, Douglas (1987). "Punctelia perreticulata, a distinct lichen species". Mycotaxon 27 (1): 249–250. http://www.cybertruffle.org.uk/cyberliber/59575/0028/001/0249.htm. 
  49. ↑ Elix, J.A.; Kantvilas, G. (2001). "Two new species of Parmeliaceae (lichenized Ascomycotina) from Tasmania". Australasian Lichenology 49: 12–15. https://www.anbg.gov.au/abrs/lichenlist/AL_49.pdf. 
  50. ↑ Wong, William Oki; Alors, David; Lumbsch, H. Thorsten; Divakar, Pradeep K.; Leavitt, Steven D.; Crespo, Ana (2016). "An integrative approach for understanding diversity in the Punctelia rudecta species complex (Parmeliaceae, Ascomycota)". PLOS ONE 11 (2): e0146537. doi:10.1371/journal.pone.0146537. PMID 26863231. Bibcode: 2016PLoSO..1146537A. 
  51. ↑ Galloway, D.J.; Elix, J.A. (1984). "Additional notes on Parmelia and Punctelia (Lichenised Ascomycotina) in Australasia". New Zealand Journal of Botany 22 (2): 441–445. doi:10.1080/0028825X.1984.10425276.  open access
  52. ↑ Kalb, Klaus (2007). "New or otherwise interesting lichens". Lichenological Contributions in Honour of David Galloway. Bibliotheca Lichenologica. 95. Berlin-Stuttgart: J. Cramer in der Gebrüder Borntraeger Verlagsbuchhandlung. pp. 297–316. ISBN 978-3-443-58074-2. 
  53. ↑ Elix, John A.; Kantvilas, G. (2005). "A new species of Punctelia (Parmeliaceae, lichenized Ascomycota) from Tasmania and New Zealand". Australasian Lichenology 57: 12–14. https://www.researchgate.net/publication/280093225. 
  54. ↑ van Herk, Kok; Aptroot, André (2000). "The sorediate Punctelia species with lecanoric acid in Europe". The Lichenologist 32 (3): 233–246. doi:10.1006/lich.1999.0261. 
  55. ↑ "Record Details: Punctelia pallescens Kurok., Bull. bot. gdn Toyama 4: 28 (1999)". Index Fungorum. http://www.indexfungorum.org/names/NamesRecord.asp?RecordID=476324. 
  56. ↑ De Lesdain, M. Bouly (2014). "Notes lichénologiques. XXX" (in fr). Bulletin de la Société Botanique de France 84 (3): 282–284. doi:10.1080/00378941.1937.10837378. 
  57. ↑ 57.0 57.1 DePriest, Paula T.; Hale, Beatrice Wilde (1998). "Mason E. Hale's list of epithets in the parmelioid genera". Mycotaxon 67: 201–206. http://www.cybertruffle.org.uk/cyberliber/59575/0067/0201.htm. 
  58. ↑ Etayo, Javier (2017). Hongos liquenícolas de Ecuador. Opera Lilloana. 50. p. 49. http://www.lillo.org.ar/revis/opera-lilloana/2017-opl-v50.pdf. 
  59. ↑ Diederich, Paul; Lawrey, James D.; Ertz, Damien (2018). "The 2018 classification and checklist of lichenicolous fungi, with 2000 non-lichenized, obligately lichenicolous taxa". The Bryologist 121 (3): 340–425 (see p. 371). doi:10.1639/0007-2745-121.3.340. 
  60. ↑ Crespo, Ana; Divakar, Pradeep K.; Argüello, Arturo; Gasca, Concepción; Hawksworth, David L. (2004). "Molecular studies on Punctelia species of the Iberian Peninsula, with an emphasis on specimens newly colonizing Madrid". The Lichenologist 36 (5): 299–308. doi:10.1017/S0024282904014434. https://www.researchgate.net/publication/231937615. 
  61. ↑ Will-Wolf, Susan; Jovan, Sarah (2019). "Lichen species as element bioindicators for air pollution in the eastern United States of America". Plant and Fungal Systematics 64 (2): 137–147. doi:10.2478/pfs-2019-0015. https://www.researchgate.net/publication/337985071. 
  62. ↑ Chaparro, Marcos A.E.; Lavornia, Juan M.; Chaparro, Mauro A.E.; Sinito, Ana M. (2013). "Biomonitors of urban air pollution: Magnetic studies and SEM observations of corticolous foliose and microfoliose lichens and their suitability for magnetic monitoring". Environmental Pollution 172: 61–69. doi:10.1016/j.envpol.2012.08.006. PMID 22982554. 
  63. ↑ Crawford, Stuart D. (2019). "Lichens used in traditional medicine". Lichen Secondary Metabolites. Bioactive Properties and Pharmaceutical Potential (2 ed.). Springer Nature Switzerland. p. 63. ISBN 978-3-030-16813-1. https://arctichealth.org/en/permalink/ahliterature297033. 
  64. ↑ Diadick Casselman, Karen (2011). Lichen Dyes. The New Source Book (2nd ed.). Mineola, New York: Dover Publications. p. 33. ISBN 978-0-486-41231-3. 

Wikidata ☰ Q5236470 entry



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