Lichens of Great Britain and Ireland

The second edition of the Lichens of Great Britain and Ireland (LGBI2) was published by the British Lichen Society in 2009, and has been the primary reference for identification of British lichens for well over ten years now. Since then there have been substantial advances in our knowledge of their systematics and distribution. The British Lichen Society therefore resolved to work towards a new edition of this work (given the acronym LGBI3). An Editorial Board oversees this task, currently composed of Paul Cannon, André Aptroot, Brian Coppins, Alan Fryday, Neil Sanderson, Janet Simkin and Rebecca Yahr.

The new project is a major undertaking, and the Editorial Board hopes that as with the second edition, a broad range of lichenologists will contribute. This might include updating treatments in LGBI2 by the same authors, revisions of those chapters by others, or completely new accounts where major changes have taken place. A warm invitation is extended to anyone who may be interested in participating as authors or revisers in this project – in the first instance please contact Paul Cannon ( who has  agreed to oversee the project administration.

The work involved in generating a complete new edition is considerable, and research into recognition and classification of lichens in our region is a continuing process. The inevitable delays involved in completing and publishing a book that will probably be longer than the 1046 pages of the second edition means that much of it will be noticeably out-of-date on the day of issue. The Editorial Board has therefore resolved to issue accounts on a family by family basis as an ongoing series of free-to-access pdf publications. These will be incorporated into traditional book format at intervals, but will remain accessible as independent documents. New findings will be included in further revisions of the family accounts, which will be issued as new documents with new numbers.

As they are published, sections of the Revisions of British and Irish Lichens will be available to download below (click on the volume number). A table charting progress can be accessed here.

Order Family Genera Vol publication date Earlier versions
Acarosporales Acarosporaceae Acarospora, Caeruleum, Myriospora, Pleopsidium, Sarcogyne, Trimmatothelopsis 12 30/03/2021  
Arthoniales Arthoniaceae Arthonia, Arthothelium, Briancoppinsia, Bryostigma, Coniocarpon, Diarthonis, Inoderma, Naevia, Pachnolepia, Reichlingia, Snippocia, Sporodophoron, Synarthonia, Tylophoron 1 12/08/2020  
Arthoniales Lecanographaceae Alyxoria, Lecanographa, Phacographa, Plectocarpon, Zwackhia 14 22/04/2021  
Arthoniales Opegraphaceae Llimonaea, Opegrapha, Paralecanographa, Sparria 13 19/04/2021  
Arthoniales Roccellaceae Cresponea, Dendrographa, Dirina, Enterographa, Gyrographa, Lecanactis, Ocellomma, Pseudoschismatomma, Psoronactis, Roccella, Schismatomma, Syncesia 32 25/06/2023 16
Baeomycetales Trapeliaceae Coppinsia, Placopsis, Placynthiella, Rimularia, Trapelia, Trapeliopsis 18 02/09/2021  
Baeomycetales Xylographaceae Lambiella, Lithographa, Ptychographa, Xylographa 17 01/09/2021  
Caliciales Caliciaceae Acolium, Amandinea, Buellia, Calicium, Diploicia, Diplotomma, Endohyalina, Monerolechia, Orcularia, Pseudothelomma, Rinodina, Tetramelas 15 30/06/2021  
Caliciales Catillariaceae Catillaria, Solenopsora 22 04/04/2022  
Caliciales Leprocaulaceae Halecania, Leprocaulon 23 04/04/2022  
Caliciales Physciaceae Anaptychia, Heterodermia, Hyperphyscia, Mischoblastia, Phaeophyscia, Physcia, Physciella, Physconia, Rinodina, Tornabea 24 19/04/2022  
Candelariales Candelariaceae Candelaria, Candelariella 21 20/12/2021  
Lecanorales Cladoniaceae Cladonia, Pilophorus, Pycnothelia 26 05/09/2022 19
Lecanorales Lecanoraceae Ameliella, Bryonora, Carbonea, Claurouxia, Clauzadeana, Glaucomaria, Japewia, Japewiella, Lecanora, Lecidella, Miriquidica, Myriolecis, Palicella, Protoparmeliopsis, Pyrrhospora, Traponora 25 18/08/2022  
Lecanorales Parmeliaceae Alectoria, Allantoparmelia, Arctoparmelia, Brodoa, Bryoria, Cetraria, Cetrariella, Cetrelia, Cornicularia, Evernia, Flavocetraria, Flavoparmelia, Hypogymnia, Hypotrachyna, Imshaugia, Melanelia, Melanelixia, Melanohalea, Menegazzia, Montanelia, Nesolechia, Parmelia, Parmelina, Parmeliopsis, Parmotrema, Platismatia, Pleurosticta, Protoparmelia, Pseudephebe, Pseudevernia, Punctelia, Raesaenenia, Tuckermannopsis, Usnea, Vulpicida, Xanthoparmelia 33 29/06/2023  
Lecanorales Pilocarpaceae Aquacidia, Byssoloma, Fellhanera, Fellhaneropsis, Leimonis, Micarea 27 03/10/2022  
Lecanorales Psoraceae Brianaria, Protoblastenia, Protomicarea, Psora 28 17/10/2022  
Lecanorales Ramalinaceae Bacidia, Bacidina, Bellicidia, Biatora, Bibbya, Bilimbia, Cliostomum, Kiliasia, Lecania, Megalaria, Mycobilimbia, Phyllopsora, Ramalina, Scutula, Thalloidima, Toninia, Toniniopsis, Tylothallia 35 05/09/2023 11
Lecanorales Sphaerophoraceae Bunodophoron, Gilbertaria, Sphaerophorus 30 25/12/2022  
Lecanorales Tephromelataceae Calvitimela, Mycoblastus, Tephromela, Violella 29 17/10/2022  
Ostropales Coenogoniaceae Coenogonium (syn. Dimerella) 3 06/01/2021  
Ostropales Graphidaceae Allographa, Clandestinotrema, Crutarndina, Diploschistes, Fissurina, Graphis, Leucodecton, Phaeographis, Schizotrema, Thelotrema, Topeliopsis 36 27/10/2023  
Ostropales Porinaceae Porina 4 06/01/2021  
Ostropales Protothelenellaceae Protothelenella 7 07/01/2021  
Ostropales Thelenellaceae Thelenella 8 07/01/2021  
Peltigerales Collemataceae Blennothallia, Callome, Collema, Enchylium, Epiphloea, Lathagrium, Leptogium, Pseudoleptogium, Scytinium 2 29/09/2020  
Peltigerales Pannariaceae Fuscopannaria, Leptogidium, Nevesia, Pannaria, Parmeliella, Pectenia (Degelia), Protopannaria, Psoroma 9 05/02/2021  
Peltigerales Peltigeraceae Crocodia, Lobaria, Lobarina, Nephroma, Peltigera, Pseudocyphellaria, Ricasolia, Solorina, Sticta 20 20/12/2021  
Pertusariales Megasporaceae Aspicilia, Aspiciliella, Circinaria, Lobothallia, Megaspora, Sagedia 34 04/09/2023  
Pertusariales Ochrolechiaceae Lepra, Ochrolechia, Varicellaria 5 07/01/2021  
Pertusariales Pertusariaceae Pertusaria 6 07/01/2021  
Verrucariales Verrucariaceae Agonimia, Atla, Bagliettoa, Catapyrenium, Dermatocarpon, Endocarpon, Henrica, Heteroplacidium, Hydropunctaria, Involucropyrenium, Merismatium, Nesothele, Normandina, Parabagliettoa, Placidopsis, Placidium, Placopyrenium, Polyblastia, Psoroglaena, Sporodictyon, Staurothele, Thelidium, Trimmatothele, Verrucaria, Verrucula, Verruculopsis and Wahlenbergiella.





Vezdaeales Vezdaeaceae Vezdaea 10 17/03/2021  


As part of this project we are also producing a more comprehensive and revised Glossary of terms, and all authors are encouraged to use these terms in a consistent manner. The draft Glossary and Notes to Authors can be downloaded below. Comments and suggestions for the Glossary will be very welcome.