Rock of Ages Display As an Introduction to Lichens
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Can Parietin Transfer Energy Radiatively to Photosynthetic Pigments?
molecules Communication Can Parietin Transfer Energy Radiatively to Photosynthetic Pigments? Beatriz Fernández-Marín 1, Unai Artetxe 1, José María Becerril 1, Javier Martínez-Abaigar 2, Encarnación Núñez-Olivera 2 and José Ignacio García-Plazaola 1,* ID 1 Department Plant Biology and Ecology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; [email protected] (B.F.-M.); [email protected] (U.A.); [email protected] (J.M.B.) 2 Faculty of Science and Technology, University of La Rioja (UR), 26006 Logroño (La Rioja), Spain; [email protected] (J.M.-A.); [email protected] (E.N.-O.) * Correspondence: [email protected]; Tel.: +34-94-6015319 Received: 22 June 2018; Accepted: 16 July 2018; Published: 17 July 2018 Abstract: The main role of lichen anthraquinones is in protection against biotic and abiotic stresses, such as UV radiation. These compounds are frequently deposited as crystals outside the fungal hyphae and most of them emit visible fluorescence when excited by UV. We wondered whether the conversion of UV into visible fluorescence might be photosynthetically used by the photobiont, thereby converting UV into useful energy. To address this question, thalli of Xanthoria parietina were used as a model system. In this species the anthraquinone parietin accumulates in the outer upper cortex, conferring the species its characteristic yellow-orange colouration. In ethanol, parietin absorbed strongly in the blue and UV-B and emitted fluorescence in the range 480–540 nm, which partially matches with the absorption spectra of photosynthetic pigments. In intact thalli, it was determined by confocal microscopy that fluorescence emission spectra shifted 90 nm towards longer wavelengths. -
Molecular Phylogenetic Study at the Generic Boundary Between the Lichen-Forming Fungi Caloplaca and Xanthoria (Ascomycota, Teloschistaceae)
Mycol. Res. 107 (11): 1266–1276 (November 2003). f The British Mycological Society 1266 DOI: 10.1017/S0953756203008529 Printed in the United Kingdom. Molecular phylogenetic study at the generic boundary between the lichen-forming fungi Caloplaca and Xanthoria (Ascomycota, Teloschistaceae) Ulrik SØCHTING1 and Franc¸ ois LUTZONI2 1 Department of Mycology, Botanical Institute, University of Copenhagen, O. Farimagsgade 2D, DK-1353 Copenhagen K, Denmark. 2 Department of Biology, Duke University, Durham, NC 27708-0338, USA. E-mail : [email protected] Received 5 December 2001; accepted 5 August 2003. A molecular phylogenetic analysis of rDNA was performed for seven Caloplaca, seven Xanthoria, one Fulgensia and five outgroup species. Phylogenetic hypotheses are constructed based on nuclear small and large subunit rDNA, separately and in combination. Three strongly supported major monophyletic groups were revealed within the Teloschistaceae. One group represents the Xanthoria fallax-group. The second group includes three subgroups: (1) X. parietina and X. elegans; (2) basal placodioid Caloplaca species followed by speciations leading to X. polycarpa and X. candelaria; and (3) a mixture of placodioid and endolithic Caloplaca species. The third main monophyletic group represents a heterogeneous assemblage of Caloplaca and Fulgensia species with a drastically different metabolite content. We report here that the two genera Caloplaca and Xanthoria, as well as the subgenus Gasparrinia, are all polyphyletic. The taxonomic significance of thallus morphology in Teloschistaceae and the current delimitation of the genus Xanthoria is discussed in light of these results. INTRODUCTION Taxonomy of Teloschistaceae and its genera The Teloschistaceae is a well-delimited family of Hawksworth & Eriksson (1986) assigned the Teloschis- lichenized fungi. -
Pronectria Rhizocarpicola, a New Lichenicolous Fungus from Switzerland
Mycosphere 926–928 (2013) ISSN 2077 7019 www.mycosphere.org Article Mycosphere Copyright © 2013 Online Edition Doi 10.5943/mycosphere/4/5/4 Pronectria rhizocarpicola, a new lichenicolous fungus from Switzerland Brackel WV Wolfgang von Brackel, Institut für Vegetationskunde und Landschaftsökologie, Georg-Eger-Str. 1b, D-91334 Hemhofen, Germany. – e-mail: [email protected] Brackel WV 2013 – Pronectria rhizocarpicola, a new lichenicolous fungus from Switzerland. Mycosphere 4(5), 926–928, Doi 10.5943/mycosphere/4/5/4 Abstract Pronectria rhizocarpicola, a new species of Bionectriaceae is described and illustrated. It is growing parasitically on Rhizocarpon geographicum in the Swiss Alps. Key words – Ascomycota – bionectriaceae – hypocreales Introduction The genus Pronectria currently comprises 44 species, including 2 algicolous and 42 lichenicolous species. Most of the lichenicolous species are living on foliose and fruticose lichens (32 species), only a few on squamulose and crustose lichens (10 species). No species of the genus was ever reported from the host genus Rhizocarpon. Materials and methods Morphological and anatomical observations were made using standard microscopic techniques. Microscopic measurements were made on hand-cut sections mounted in water with an accuracy up to 0.5 µm. Measurements of ascospores and asci are recorded as (minimum–) X-σ X – X+σ X (–maximum) followed by the number of measurements. The holotype is deposited in M, one isotype in the private herbarium of the author (hb ivl). Results Pronectria rhizocarpicola Brackel, sp. nov. Figs 1–2 MycoBank 805068 Etymology – pertaining to the host genus Rhizocarpon. Diagnosis – Fungus lichenicola in thallo et ascomatibus lichenis Rhizocarpon geographicum crescens. -
Xanthoria Parietina (L). TH. FR. MYCOBIONT ISOLATION BY
Muzeul Olteniei Craiova. Oltenia. Studii úi comunicări. ùtiinĠele Naturii. Tom. 29, No. 2/2013 ISSN 1454-6914 Xanthoria parietina (L). TH.FR. MYCOBIONT ISOLATION BY ASCOSPORE DISCHARGE, GERMINATION AND DEVELOPMENT IN “IN VITRO” CULTURE CRISTIAN Diana, BREZEANU Aurelia Abstract. The article is focused on fungal partner isolation from the Xanthoria parietina (Teloschistaceae) lichen body by ascospore discharge from golden disk-like fruits - ascoma, followed by germination and subsequent development on liquid nutrient medium Malt-Yeast extract (AHMADJIAN, 1967a) under different temperature and light/dark regime conditions. The morphology of the mycobiont and the inner structure were characterized by stereomicroscope Stemi 2000 C, light microscope Scope. A1, Zeiss and by the JEOL - JSM - 6610LV Scanning Electron Microscope. Keywords: mycobiont, ascospore isolation, lichen culture. Rezumat. Izolarea micobiontului de Xanthoria parietina (L.) TH.FR. prin descărcarea sporilor, germinarea úi dezvoltarea în cultură ,,in vitro”. Acest articol se axează pe izolarea partenerului fungal din talul de X. parietina (Teloschistaceae), prin eliberarea ascosporilor din apoteciile disciforme aurii, urmată de germinarea úi dezvoltarea pe mediu nutritiv lichid Malt-Yeast extract (AHMADJIAN, 1967a) la diferite temperaturi úi sub un regim diferit de lumină/întuneric. Morfologia micobiontului úi structura sa internă au fost caracterizate la stereomicroscop Stemi 2000 C, la microscopul optic Scope. A1, Zeiss úi la microscopul electronic scanning JEOL - JSM - 6610LV. Cuvinte cheie: micobiont, izolarea ascosporilor, cultura lichenică. INTRODUCTION Lichens are a product of symbiotic association of two unrelated organisms, a primary producer (photobiont) - cyanobacteria or algae - and a primary consumer, a type of fungi (mycobiont), forming a new biological entity, with no resemblance to its individual components, due to non-structural, biochemical changes and physiological essentials for morphological differentiation, interaction and stability of the association. -
BLS Bulletin 111 Winter 2012.Pdf
1 BRITISH LICHEN SOCIETY OFFICERS AND CONTACTS 2012 PRESIDENT B.P. Hilton, Beauregard, 5 Alscott Gardens, Alverdiscott, Barnstaple, Devon EX31 3QJ; e-mail [email protected] VICE-PRESIDENT J. Simkin, 41 North Road, Ponteland, Newcastle upon Tyne NE20 9UN, email [email protected] SECRETARY C. Ellis, Royal Botanic Garden, 20A Inverleith Row, Edinburgh EH3 5LR; email [email protected] TREASURER J.F. Skinner, 28 Parkanaur Avenue, Southend-on-Sea, Essex SS1 3HY, email [email protected] ASSISTANT TREASURER AND MEMBERSHIP SECRETARY H. Döring, Mycology Section, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, email [email protected] REGIONAL TREASURER (Americas) J.W. Hinds, 254 Forest Avenue, Orono, Maine 04473-3202, USA; email [email protected]. CHAIR OF THE DATA COMMITTEE D.J. Hill, Yew Tree Cottage, Yew Tree Lane, Compton Martin, Bristol BS40 6JS, email [email protected] MAPPING RECORDER AND ARCHIVIST M.R.D. Seaward, Department of Archaeological, Geographical & Environmental Sciences, University of Bradford, West Yorkshire BD7 1DP, email [email protected] DATA MANAGER J. Simkin, 41 North Road, Ponteland, Newcastle upon Tyne NE20 9UN, email [email protected] SENIOR EDITOR (LICHENOLOGIST) P.D. Crittenden, School of Life Science, The University, Nottingham NG7 2RD, email [email protected] BULLETIN EDITOR P.F. Cannon, CABI and Royal Botanic Gardens Kew; postal address Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, email [email protected] CHAIR OF CONSERVATION COMMITTEE & CONSERVATION OFFICER B.W. Edwards, DERC, Library Headquarters, Colliton Park, Dorchester, Dorset DT1 1XJ, email [email protected] CHAIR OF THE EDUCATION AND PROMOTION COMMITTEE: S. -
One Hundred New Species of Lichenized Fungi: a Signature of Undiscovered Global Diversity
Phytotaxa 18: 1–127 (2011) ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ Monograph PHYTOTAXA Copyright © 2011 Magnolia Press ISSN 1179-3163 (online edition) PHYTOTAXA 18 One hundred new species of lichenized fungi: a signature of undiscovered global diversity H. THORSTEN LUMBSCH1*, TEUVO AHTI2, SUSANNE ALTERMANN3, GUILLERMO AMO DE PAZ4, ANDRÉ APTROOT5, ULF ARUP6, ALEJANDRINA BÁRCENAS PEÑA7, PAULINA A. BAWINGAN8, MICHEL N. BENATTI9, LUISA BETANCOURT10, CURTIS R. BJÖRK11, KANSRI BOONPRAGOB12, MAARTEN BRAND13, FRANK BUNGARTZ14, MARCELA E. S. CÁCERES15, MEHTMET CANDAN16, JOSÉ LUIS CHAVES17, PHILIPPE CLERC18, RALPH COMMON19, BRIAN J. COPPINS20, ANA CRESPO4, MANUELA DAL-FORNO21, PRADEEP K. DIVAKAR4, MELIZAR V. DUYA22, JOHN A. ELIX23, ARVE ELVEBAKK24, JOHNATHON D. FANKHAUSER25, EDIT FARKAS26, LIDIA ITATÍ FERRARO27, EBERHARD FISCHER28, DAVID J. GALLOWAY29, ESTER GAYA30, MIREIA GIRALT31, TREVOR GOWARD32, MARTIN GRUBE33, JOSEF HAFELLNER33, JESÚS E. HERNÁNDEZ M.34, MARÍA DE LOS ANGELES HERRERA CAMPOS7, KLAUS KALB35, INGVAR KÄRNEFELT6, GINTARAS KANTVILAS36, DOROTHEE KILLMANN28, PAUL KIRIKA37, KERRY KNUDSEN38, HARALD KOMPOSCH39, SERGEY KONDRATYUK40, JAMES D. LAWREY21, ARMIN MANGOLD41, MARCELO P. MARCELLI9, BRUCE MCCUNE42, MARIA INES MESSUTI43, ANDREA MICHLIG27, RICARDO MIRANDA GONZÁLEZ7, BIBIANA MONCADA10, ALIFERETI NAIKATINI44, MATTHEW P. NELSEN1, 45, DAG O. ØVSTEDAL46, ZDENEK PALICE47, KHWANRUAN PAPONG48, SITTIPORN PARNMEN12, SERGIO PÉREZ-ORTEGA4, CHRISTIAN PRINTZEN49, VÍCTOR J. RICO4, EIMY RIVAS PLATA1, 50, JAVIER ROBAYO51, DANIA ROSABAL52, ULRIKE RUPRECHT53, NORIS SALAZAR ALLEN54, LEOPOLDO SANCHO4, LUCIANA SANTOS DE JESUS15, TAMIRES SANTOS VIEIRA15, MATTHIAS SCHULTZ55, MARK R. D. SEAWARD56, EMMANUËL SÉRUSIAUX57, IMKE SCHMITT58, HARRIE J. M. SIPMAN59, MOHAMMAD SOHRABI 2, 60, ULRIK SØCHTING61, MAJBRIT ZEUTHEN SØGAARD61, LAURENS B. SPARRIUS62, ADRIANO SPIELMANN63, TOBY SPRIBILLE33, JUTARAT SUTJARITTURAKAN64, ACHRA THAMMATHAWORN65, ARNE THELL6, GÖRAN THOR66, HOLGER THÜS67, EINAR TIMDAL68, CAMILLE TRUONG18, ROMAN TÜRK69, LOENGRIN UMAÑA TENORIO17, DALIP K. -
Lichens and Associated Fungi from Glacier Bay National Park, Alaska
The Lichenologist (2020), 52,61–181 doi:10.1017/S0024282920000079 Standard Paper Lichens and associated fungi from Glacier Bay National Park, Alaska Toby Spribille1,2,3 , Alan M. Fryday4 , Sergio Pérez-Ortega5 , Måns Svensson6, Tor Tønsberg7, Stefan Ekman6 , Håkon Holien8,9, Philipp Resl10 , Kevin Schneider11, Edith Stabentheiner2, Holger Thüs12,13 , Jan Vondrák14,15 and Lewis Sharman16 1Department of Biological Sciences, CW405, University of Alberta, Edmonton, Alberta T6G 2R3, Canada; 2Department of Plant Sciences, Institute of Biology, University of Graz, NAWI Graz, Holteigasse 6, 8010 Graz, Austria; 3Division of Biological Sciences, University of Montana, 32 Campus Drive, Missoula, Montana 59812, USA; 4Herbarium, Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824, USA; 5Real Jardín Botánico (CSIC), Departamento de Micología, Calle Claudio Moyano 1, E-28014 Madrid, Spain; 6Museum of Evolution, Uppsala University, Norbyvägen 16, SE-75236 Uppsala, Sweden; 7Department of Natural History, University Museum of Bergen Allégt. 41, P.O. Box 7800, N-5020 Bergen, Norway; 8Faculty of Bioscience and Aquaculture, Nord University, Box 2501, NO-7729 Steinkjer, Norway; 9NTNU University Museum, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; 10Faculty of Biology, Department I, Systematic Botany and Mycology, University of Munich (LMU), Menzinger Straße 67, 80638 München, Germany; 11Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK; 12Botany Department, State Museum of Natural History Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany; 13Natural History Museum, Cromwell Road, London SW7 5BD, UK; 14Institute of Botany of the Czech Academy of Sciences, Zámek 1, 252 43 Průhonice, Czech Republic; 15Department of Botany, Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-370 05 České Budějovice, Czech Republic and 16Glacier Bay National Park & Preserve, P.O. -
Further Investigations on Rhizocarpon of North-Eastern Iran: R
Hindawi Publishing Corporation Journal of Mycology Volume 2014, Article ID 528041, 5 pages http://dx.doi.org/10.1155/2014/528041 Research Article Further Investigations on Rhizocarpon of North-Eastern Iran: R. geographicum Mahroo Haji Moniri Department of Biology, Faculty of Sciences, Islamic Azad University, Mashhad Branch, Mashhad 917 56 89 119, Iran Correspondence should be addressed to Mahroo Haji Moniri; h [email protected] Received 15 January 2014; Accepted 7 April 2014; Published 29 April 2014 Academic Editor: Simona Nardoni Copyright © 2014 Mahroo Haji Moniri. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Morphology, anatomy, secondary chemistry, ecology, and distribution of Rhizocarpon geographicum (Rhizocarpaceae, lichenized Ascomycota) in north-eastern Iran are investigated and discussed. 1. Introduction the elevation of the sites ranges from 1340 to 1880 m. Over 537 Rhizocarpon thalli were investigated of which 311 (58%) Iran has an exceptional variety of biomes which has resulted belong to R. geographicum. As a result much new information in an extensive diversity in many organism groups including became available on the species of Rhizocarpon [11–13]. Mor- lichens. The history of lichenological exploration in north- phological and anatomical characteristics of the thalli and eastern Iran is fairly extensive, dating back to the middle fruiting bodies were examined with a stereomicroscope and a of the twentieth century [1, 2]. Since 2004, however, the light microscope. Preparations were made in distilled water, investigations in the present Khorasan provinces have much 10% KOH and KI. -
Lichenometry and the Biology of the Lichen Genus Rhizocarpon
1 Invited Review 2 3 4 LICHENOMETRIC DATING (LICHENOMETRY) AND THE BIOLOGY OF 5 THE LICHEN GENUS RHIZOCARPON: CHALLENGES AND FUTURE 6 DIRECTIONS 7 8 9 Richard A. Armstrong 10 11 12 13 14 Dept. of Vision Sciences, Aston University, Birmingham B4 7ET, United Kingdom, 15 E-mail: [email protected] 16 1 17 ABSTRACT. Lichenometric dating (lichenometry) involves the use of lichen 18 measurements to estimate the age of exposure of various substrata. Because of low 19 radial growth rates [RaGR] and considerable longevity, species of the crustose lichen 20 genus Rhizocarpon have been the most useful in lichenometry. The primary 21 assumption of lichenometry is that colonization, growth, and mortality of 22 Rhizocarpon are similar on surfaces of known and unknown age so that the largest 23 thalli present on the respective faces are of comparable age. This review describes the 24 current state of knowledge regarding the biology of Rhizocarpon and considers two 25 main questions: (1) to what extent does existing knowledge support this assumption 26 and (2) what further biological observations would be useful both to test its validity 27 and to improve the accuracy of lichenometric dates? A review of the Rhizocarpon 28 literature identified gaps in knowledge regarding early development, the growth 29 rate/size curve, mortality, regeneration, competitive effects, colonization, and 30 succession on rock surfaces. The data suggest that these processes may not be 31 comparable on different rock surfaces, especially in regions where growth rates and 32 thallus turnover are high. In addition, several variables could differ between rock 33 surfaces and influence maximum thallus size including rate and timing of 34 colonization, RaGR, environmental differences, thallus fusion, allelopathy, thallus 35 mortality, colonization, and competition. -
UV-B Absorbing and Bioactive Secondary Compounds in Lichens Xanthoria Elegans and Xanthoria Parietina: a Review
CZECH POLAR REPORTS 10 (2): 252-262, 2020 UV-B absorbing and bioactive secondary compounds in lichens Xanthoria elegans and Xanthoria parietina: A review Vilmantas Pedišius Instrumental Analysis Open Access Centre, Faculty of Natural Sciences, Vytautas Magnus university, Vileikos g. 8-212, LT-44404, Kaunas, Lithuania Abstract Secondary metabolites are the bioactive compounds of plants which are synthesized during primary metabolism, have no role in the development process but are needed for defense and other special purposes. These secondary metabolites, such as flavonoids, terpenes, alkaloids, anthraquinones and carotenoids, are found in Xanthoria genus li- chens. These lichens are known as lichenized fungi in the family Teloschistaceae, which grows on rock and produce bioactive compounds. A lot of secondary compounds in plants are induced by UV (100-400 nm) spectra. The present review showcases the present identified bioactive compounds in Xanthoria elegans and Xanthoria parietina lichens, which are stimulated by different amounts of UV-B light (280-320 nm), as well as the biochemistry of the UV-B absorbing compounds. Key words: UV-B, Xanthoria parietina, Xanthoria elegans, parietin, phenolic compounds, carotenoids, anthraquinone DOI: 10.5817/CPR2020-2-19 Introduction UV-B light plays an important role in membranes and DNA (Gu et al. 2010, nature, yet it may cause adverse effects Yavaş et al. 2020). For example, enhanced in high amounts of it. Chlorofluorocarbons concentrations of the indole 1-methoxy-3- are mainly responsible for the depletion indolylmethyl glucosinolate were reported of ozone layer which results in an increase to result in the formation of DNA adducts of UV-B (280 to 320 nm) irradiation of (Glatt et al. -
New Records of <I>Rhizocarpon</I>
ISSN (print) 0093-4666 © 2013. Mycotaxon, Ltd. ISSN (online) 2154-8889 MYCOTAXON http://dx.doi.org/10.5248/125.217 Volume 125, pp. 217–226 July–September 2013 New records of Rhizocarpon from China Zun-Tian Zhao, Chao Li, Xin Zhao & Lu-Lu Zhang* College of Life Science, Shandong Normal University, Jinan, 250014, P. R. China *Correspondence to: [email protected] Abstract – Four new lichen records are reported from China — Rhizocarpon grande, R. infernulum, R. petraeum, and R. rubescens. Detailed taxonomic descriptions with photos and comments are provided. Key words – Rhizocarpaceae, Asia, taxonomy Introduction De Candolle originally established Rhizocarpon (Rhizocarpaceae) in 1805 (Kirk et al. 2008). The lichen genus, which is predominately distributed in temperate, alpine and polar regions, includes about 200 species worldwide (Feuerer & Timdal 2004; Ihlen 2004; Kirk et al. 2008). The genus is distinguished by its rock dwelling crustose thallus with black lecideine apothecia, branched and anastomosed paraphyses, Rhizocarpon-type asci, and 1-septate to muriform ascospores with a swollen perispore (halonate). Traditionally Rhizocarpon is divided into taxa with a yellow thallus containing rhizocarpic acid (subgenus Rhizocarpon) and taxa with white, gray, or brown thalli lacking rhizocarpic acid (subgenus Phaeothallus) (Thomson 1967). In China, 28 Rhizocarpon species have been reported (Wei 1991; Abbas & Wu 1998; Aptroot 2002; Aptroot & Sparrius 2003). During our study of Rhizocarpon in China, four additional species were found in subgenus Phaeothallus: R. grande, R. infernulum, R. petraeum, and R. rubescens. Materials & methods The examined specimens are preserved in SDNU (Lichen Section of Botanical Herbarium, Shandong Normal University). Their morphological and anatomical characters were examined under a stereomicroscope (COIC XTL7045B2) and a polarizing microscope (Olympus CX41). -
The Rediscovery of Xanthoria (Teloschistaceae) in Brazil
The rediscovery of Xanthoria in Brazil 1 The rediscovery of Xanthoria (Teloschistaceae) in Brazil Adriano Afonso Spielmann1, Mayara Camila Scur2, Aline Pedroso Lorenz2 and Neli Kika Honda3 1 Laboratório de Botânica / Liquenologia, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande – MS, Brazil. 2 Laboratório de Ecologia e Biologia Evolutiva, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande – MS, Brazil. 3 Laboratório de Pesquisa LP2, Instituto de Química, Universidade Federal de Mato Grosso do Sul, Campo Grande – MS, Brazil. Author for correspondence: [email protected]. Abstract: After the first collection by Malme in 1892, a specimen of the genus Xanthoria was rediscovered growing on the public library wall in a coastal city from southern Brazil. The specimen is morphologically, chemically, and genetically similar to X. parietina. Introduction Brazil is a megadiverse country in terms of lichen diversity, with about 4.000 described species (Aptroot et al., in prep.), although some well-known genera, like Xanthoria (Fr.) Th. Fr., 1860, are rarely found. Belonging to Teloschistaceae Zahlbr, one of the largest families of lichenized fungi (Arup et al. 2013, Lücking et al. 2017), Xanthoria parietina (L.) Th. Fr. is a widely studied species, especially in Europe and North America, where it is locally abundant (Brodo et al. 2001, Lindblom 1997, Smith et al. 2009). In Brazil the genus Xanthoria was reported once (Malme 1926) as Xanthoria parietina f. albicans (Müll. Arg.) Hillm., to Pelotas, Rio Grande do Sul State. This form was recognized by Hillmann (1920), Malme (1926), and Grassi (1953), having as differential features the thalli whitish in the center, becoming gradually yellow towards the margins (Grassi 1953).