… by conservation value
Ireland does not have a Lichen Red Data list. Hopefully one will emerge after the current LichenIreland Project. The conservation evaluation of Ireland's lichens in this section is based on the BLS text 'A Conservation Evaluation of British Lichens' by Woods and Coppins 2003. It is applied here to Ireland with the proviso that some evaluations may be underestimated rather than exaggerated. A detailed explanation of the categories is given in the text, available from the BLS.
NS - Nationally Scarce
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Acrocordia macrospora
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Anaptychia ciliaris subsp. mamillata
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Caloplaca ferruginea
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Caloplaca maritima
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Lecanora zosterae
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Lecidella meiococca
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Leptogium cochleatum
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Physcia tribacioides
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Placidium squamulosum
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Solenopsora holophaea
NR - Nationally Rare
NT - Near Threatened
VU - Vulnerable
EN - Endangered
IR - International Responsibility
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Blarneya hibernica
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Caloplaca ferruginea
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Degelia plumbea
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Leptogium cochleatum
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Lobaria virens
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Pannaria conoplea
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Parmeliella parvula
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Peltigera collina
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Pyrenula dermatodes
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Ramalina fraxinea
LC - Least Concern
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Acarospora fuscata
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Acarospora impressula
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Acrocordia conoidea
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Acrocordia gemmata
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Acrocordia macrospora
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Acrocordia salweyi
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Agonimia tristicula
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Amandinea punctata
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Anaptychia runcinata
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Arthonia punctiformis
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Aspicilia calcarea
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Bryoria fuscescens
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Calicium viride
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Caloplaca ceracea
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Caloplaca decipiens
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Caloplaca ferruginea
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Caloplaca marina
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Caloplaca maritima
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Caloplaca thallincola
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Caloplaca verruculifera
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Candelaria concolor
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Catillaria chalybeia
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Cetraria islandica
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Cladonia bellidiflora
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Cladonia fimbriata
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Cladonia floerkeana
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Cladonia gracilis
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Cladonia polydactyla
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Cladonia pyxidata
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Cladonia squamosa
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Degelia plumbea
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Dermatocarpon miniatum
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Diplotomma alboatrum
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Gyalecta jenensis var. jenensis
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Hypogymnia tubulosa
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Lecanora campestris
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Lecanora carpinea
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Lecanora crenulata
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Lecanora muralis
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Lecanora pulicaris
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Lecanora varia
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Lecanora zosterae
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Lecidea lithophila
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Lecidella eleachroma f. eleachroma
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Lecidella meiococca
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Leprocaulon microscopicum
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Leptogium lichenoides
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Leptogium schraderi
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Leptogium teretiusculum
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Lichina confinis
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Lobaria virens
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Melanohalea exasperata
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Mycobilimbia pilularis
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Normandina pulchella
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Ochrolechia parella
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Pannaria conoplea
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Parmelia saxatilis
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Parmeliella parvula
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Parmelina pastillifera
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Parmotrema perlatum
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Peltigera collina
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Peltigera hymenina
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Peltigera membranacea
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Peltigera praetextata
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Pertusaria pseudocorallina
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Placidium squamulosum
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Porpidia hydrophila
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Protopannaria pezizoides
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Punctelia borreri
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Pyrenula macrospora
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Ramalina cuspidata
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Ramalina fastigiata
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Ramalina fraxinea
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Ramalina siliquosa
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Rhizocarpon lavatum
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Solenopsora holophaea
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Solenospora vulturiensis
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Thelotrema lepadinum
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Toninia aromatica
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Usnea florida
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Usnea subfloridana
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Xanthoria aureola
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Xanthoria calcicola
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Xanthoria polycarpa