Abrothallus De Not.

• Abrothallus *parmeliarum (Sommerf.) Arnold — Yamal-Gydan area.

Acarospora A.Massal.

• Acarospora almquistii H.Magn. — Beringian Chukotka.
• Acarospora badiofusca (Nyl.) Th.Fr. — Novaya Zemlya, Kharaulakh area.
• Acarospora bullata Anzi — Novaya Zemlya.
• Acarospora chlorophana (Wahlenb.) A.Massal. >>> Pleopsidium chlorophanum
• Acarospora cervina A.Massal. — Novosibirskiye Islands.
• Acarospora cervina var. glaucocarpa (Wahlenb.) Körb. >>> Acarospora glaucocarpa
• Acarospora fuscata (Schrad.) Th.Fr. — Novaya Zemlya, Taimyr, Wrangel Island, Beringian Chukotka.
• Acarospora glaucocarpa (Ach.) Körb. — Novaya Zemlya, Kharaulakh area, Novosibirskiye Islands, Beringian Chukotka.
• Acarospora glaucocarpa (Ach.) Körb. var. depauperata (Körb.) A.L.Sm. — Beringian Chukotka.
• Acarospora impressula Th.Fr. — Taimyr, Beringian Chukotka.
• Acarospora interposita H.Magn. >>> Acarospora fuscata
• Acarospora lesdainii A.L.Sm. >>> Acarospora smaragdula var. lesdainii
• Acarospora macrospora (Hepp) Bagl. — Novaya Zemlya, Wrangel Island, Beringian Chukotka.
• Acarospora molybdina (Wahlenb.) A.Massal. — Zemlya Frantsa-Iosifa, Novaya Zemlya, Taimyr, Novosibirskiye Islands, Beringian Chukotka.
• Acarospora multipunctata Vain. >>> Aspicilia multipunctata
• Acarospora novae-zemliae H.Magn. >>> Acarospora scabrida var. novae-zemliae
• Acarospora peliocypha (Wahlenb.) Arnold >>> Acarospora peliscypha
• Acarospora peliscypha Th.Fr. — Taimyr.
• Acarospora rhizobola (Nyl.) Alstrup — Taimyr.
• Acarospora scabrida Hedl. ex H.Magn. var. novae-zemliae (H.Magn.) N.S.Golubk. — Novaya Zemlya.
• Acarospora schleicheri (Ach.) A.Massal. — Wrangel Island.
• Acarospora scyphulifera Vain. — Taimyr, Wrangel Island, Beringian Chukotka.
• Acarospora sinopica (Wahlenb.) Körb. — Novaya Zemlya.
• Acarospora smaragdula (Wahlenb.) A.Massal. — Yamal-Gydan area, Taimyr, Severnaya Zemlya, Beringian Chukotka.
• Acarospora smaragdula (Wahlenb.) A.Massal. var. lesdainii (A.L.Sm.) H.Magn. — Novaya Zemlya, Novosibirskiye Islands.
• Acarospora veronensis A.Massal. — Novaya Zemlya, Yamal-Gydan area, Yana-Kolyma area, Beringian Chukotka.

Adelolecia Hertel & Hafellner

• Adelolecia kolaënsis (Nyl.) Hertel & Rambold — Novaya Zemlya, Taimyr, Severnaya Zemlya, Beringian Chukotka.
• Adelolecia pilati (Hepp) Hertel & Hafellner — Polar Ural, Continental Chukotka, Wrangel Island, Beringian Chukotka.

Alectoria Ach.

• Alectoria arctica Elenkin & Savicz >>> Evernia perfragilis
• Alectoria bicolor (Ehrh.) Nyl. >>> Bryoria bicolor
• Alectoria cana (Ach.) Leight. >>> Bryoria capillaris ?
• Alectoria jubata auct. >>> Bryoria fuscescens
• Alectoria jubata auct. var. chalybeiformis Ach. >>> Bryoria chalybeiformis
• Alectoria nigricans (Ach.) Nyl. — Zemlya Frantsa-Iosifa, Kanin-Pechora area, Polar Ural, Novaya Zemlya, Yamal-Gydan area, Taimyr, Severnaya Zemlya, Anabara-Olenyok area, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Alectoria ochroleuca (Hoffm.) A.Massal. — Zemlya Frantsa-Iosifa, Kanin-Pechora area, Polar Ural, Novaya Zemlya, Yamal-Gydan area, Taimyr, Severnaya Zemlya, Anabara-Olenyok area, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Alectoria sarmentosa (Ach.) Ach. — Kanin-Pechora area.
• Alectoria thrausta Ach. >>> Ramalina thrausta

Allantoparmelia (Vain.) Essl.

• Allantoparmelia almquistii (Vain.) Essl. — Novaya Zemlya, Taimyr, Yana-Kolyma area, Continental Chukotka, Wrangel Island, Beringian Chukotka.
• Allantoparmelia alpicola (Th.Fr.) Essl. — Polar Ural, Novaya Zemlya, Taimyr, Severnaya Zemlya, Kharaulakh area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, Beringian Chukotka.
• Allantoparmelia sibirica (Zahlbr.) Essl. — Polar Ural, Novaya Zemlya, Taimyr, Continental Chukotka, Wrangel Island, Beringian Chukotka.

Allarthonia (Nyl.) Zahlbr.

• Allarthonia fusca (A.Massal.) Sandst. >>> Arthonia lapidicola

Amandinea Choisy ex Scheid. & H.Mayrhofer

• Amandinea coniops (Wahlenb.) Choisy ex Scheid. & H.Mayrhofer — Zemlya Frantsa-Iosifa, Novaya Zemlya, Severnaya Zemlya, Kharaulakh area, Beringian Chukotka.
• Amandinea punctata (Hoffm.) Coppins & Scheid. — Zemlya Frantsa-Iosifa, Polar Ural, Novaya Zemlya, Yamal-Gydan area, Taimyr, Anabara-Olenyok area, Novosibirskiye Islands, Continental Chukotka, Beringian Chukotka.

Amygdalaria Norman

• Amygdalaria elegantior (H.Magn.) Hertel & Brodo — Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Amygdalaria panaeola (Ach.) Hertel & Brodo — Polar Ural, Novaya Zemlya, Yana-Kolyma area, Continental Chukotka, South Chukotka, Beringian Chukotka.
• Amygdalaria subdissentiens (Nyl.) Mas.Inoue & Brodo — Beringian Chukotka.

Arctocetraria Kärnefelt & Thell

• Arctocetraria andrejevii (Oxner) Kärnefelt & Thell — Kanin-Pechora area, Yamal-Gydan area, Taimyr, Severnaya Zemlya, Anabara-Olenyok area, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Arctocetraria nigricascens (Nyl.) Kärnefelt & Thell — Zemlya Frantsa-Iosifa, Yamal-Gydan area, Taimyr, Severnaya Zemlya, Anabara-Olenyok area, Kharaulakh area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, Beringian Chukotka.

Arctomia Th.Fr.

• Arctomia delicatula Th.Fr. — Novaya Zemlya, Taimyr, Kharaulakh area, Wrangel Island, Beringian Chukotka.
• Arctomia interfixa (Nyl.) Vain. — Novaya Zemlya, Taimyr, Beringian Chukotka.

Arctoparmelia Hale

• Arctoparmelia centrifuga (L.) Hale — Kanin-Pechora area, Polar Ural, Novaya Zemlya, Taimyr, Severnaya Zemlya, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Arctoparmelia incurva (Pers.) Hale — Polar Ural, Novaya Zemlya, Taimyr, Kharaulakh area, Continental Chukotka, Wrangel Island, Beringian Chukotka.
• Arctoparmelia separata (Th.Fr.) Hale — Polar Ural, Novaya Zemlya, Taimyr, Anabara-Olenyok area, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.

Arctopeltis Poelt

• Arctopeltis thuleana Poelt — Novaya Zemlya, Taimyr, Novosibirskiye Islands, Beringian Chukotka.

Arthonia Ach.

• Arthonia exilis (Flörke) Anzi — Taimyr.
• Arthonia fusca (A.Massal.) Hepp >>> Arthonia lapidicola
• Arthonia *glaucomaria Nyl. — Polar Ural, Beringian Chukotka.
• Arthonia lapidicola (Taylor) Branth & Rostr. — Novaya Zemlya, Kharaulakh area, Beringian Chukotka.

Arthopyrenia A.Massal.

• Arthopyrenia analepta auct. >>> Arthopyrenia punctiformis
• Arthopyrenia fallax (Nyl.) Arnold >>> Arthopyrenia lapponina
• Arthopyrenia humicola Vain. — Beringian Chukotka.
• Arthopyrenia lapponina Anzi — Kanin-Pechora area, Yamal-Gydan area, Beringian Chukotka.
• Arthopyrenia punctiformis (Pers.) A.Massal. — Beringian Chukotka.
• Arthopyrenia pyrenastrella (Nyl.) Arnold >>> Arthopyrenia punctiformis

Arthrorhaphis Th.Fr.

• Arthrorhaphis alpina (Schaer.) R.Sant. — Novaya Zemlya, Taimyr, Severnaya Zemlya, Beringian Chukotka.
• Arthrorhaphis anziana (Lynge) Poelt >>> Arthrorhaphis vacillans
• Arthrorhaphis citrinella (Ach.) Poelt — Yamal-Gydan area, Taimyr, Anabara-Olenyok area, Kharaulakh area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, Beringian Chukotka.
• Arthrorhaphis citrinella var. alpina (Schaer.) Poelt >>> Arthrorhaphis alpina
• Arthrorhaphis vacillans Th.Fr. — Novaya Zemlya, Taimyr, Novosibirskiye Islands, Continental Chukotka, Wrangel Island.

Asahinea W.L.Culb. & C.F.Culb.

• Asahinea chrysantha (Tuck.) C.F.Culb. & W.L.Culb. — Polar Ural, Novaya Zemlya, Yamal-Gydan area, Taimyr, Anabara-Olenyok area, Kharaulakh area, Yana-Kolyma area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.
• Asahinea scholanderi (Llano) C.F.Culb. & W.L.Culb. — Polar Ural, Taimyr, Kharaulakh area, Continental Chukotka, Wrangel Island, South Chukotka, Beringian Chukotka.

Aspicilia A.Massal.

• Aspicilia alboradiata (H.Magn.) Oxner — Novaya Zemlya, Taimyr, Severnaya Zemlya.
• Aspicilia aliena (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia alphoplaca (Wahlenb.) Poelt & Leuckert >>> Lobothallia alphoplaca
• Aspicilia alpina (Sommerf.) Arnold >>> Bellemerea alpina
• Aspicilia anseris (Lynge) J.W.Thomson — Severnaya Zemlya.
• Aspicilia aquatica Körb. — Severnaya Zemlya, .
• Aspicilia caesiocinerea (Nyl. ex Malbr.) Arnold — Polar Ural, Anabara-Olenyok area, Beringian Chukotka.
• Aspicilia calcarea (L.) Mudd — Novaya Zemlya, Taimyr, Kharaulakh area, Wrangel Island, Beringian Chukotka.
• Aspicilia candida (Anzi) Hue — Novaya Zemlya, Kharaulakh area, Wrangel Island.
• Aspicilia ceracea (Körb.) Arnold >>> Hymenelia ceracea
• Aspicilia cinerea (L.) Körb. — Polar Ural, Novaya Zemlya, Taimyr, Anabara-Olenyok area, Kharaulakh area, Novosibirskiye Islands, Continental Chukotka, Wrangel Island, Beringian Chukotka.
• Aspicilia cinereorufescens (Ach.) A.Massal. >>> Bellemerea cinereorufescens
• Aspicilia cingulata (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia circularis (H.Magn.) Oxner — Novaya Zemlya.
• Aspicilia composita (Lynge) J.W.Thomson — Novosibirskiye Islands.
• Aspicilia contigua (Lynge) J.W.Thomson — Novosibirskiye Islands.
• Aspicilia contorta (Hoffm.) Kremp. — Beringian Chukotka.
• Aspicilia cupreoatra (Nyl.) Arnold. — Yana-Kolyma area.
• Aspicilia curvabilis (Nyl.) Hue — Taimyr, Novosibirskiye Islands.
• Aspicilia cyanocarpa Anzi >>> Ionaspis cyanocarpa
• Aspicilia dendroplaca (H.Magn.) Oxner — Novaya Zemlya.
• Aspicilia disserpens (Zahlbr.) Räsänen — Novaya Zemlya, Severnaya Zemlya, Novosibirskiye Islands.
• Aspicilia dudinensis (H.Magn.) Oxner — Taimyr.
• Aspicilia farinosa (Flörke) Arnold — Yana-Kolyma area.
• Aspicilia fimbriata (H.Magn.) Oxner — Taimyr.
• Aspicilia flavida (Hepp) Rehm >>> Eiglera flavida
• Aspicilia gibbosa (Ach.) Körb. — Polar Ural, Novaya Zemlya, Taimyr, Anabara-Olenyok area, Beringian Chukotka.
• Aspicilia gibbosa (Ach.) Körb. var. squamata Körb. — Taimyr, Novosibirskiye Islands.
• Aspicilia gyrodes (Nyl.) Hue — Novaya Zemlya, Severnaya Zemlya.
• Aspicilia heteroplaca (Zahlbr.) Oxner — Novaya Zemlya, Novosibirskiye Islands, Wrangel Island.
• Aspicilia hyperboreorum (Zahlbr.) Oxner — Novaya Zemlya, Severnaya Zemlya.
• Aspicilia indissimilis (H.Magn.) Räsänen — Novaya Zemlya.
• Aspicilia lacustris (With.) Th.Fr. >>> Ionaspis lacustris
• Aspicilia laevata (Ach.) Arnold — Novaya Zemlya, Severnaya Zemlya, Beringian Chukotka.
• Aspicilia laevatoides (H.Magn.) Oxner — Anabara-Olenyok area.
• Aspicilia lapponica Hue — Severnaya Zemlya.
• Aspicilia leprosescens (Sandst.) Hav. — Zemlya Frantsa-Iosifa.
• Aspicilia lesleyana Darb. — Novaya Zemlya, Taimyr.
• Aspicilia mashiginensis (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia mastrucata (Wahlenb.) Th.Fr. — Zemlya Frantsa-Iosifa, Novaya Zemlya, Kharaulakh area, Wrangel Island.
• Aspicilia melanaspis (Ach.) Poelt & Leuckert >>> Lobothallia melanaspis
• Aspicilia melanophaea Körb. >>> Tremolecia atrata
• Aspicilia melinodes Körb. >>> Porpidia melinodes
• Aspicilia morioides Blomb. >>> Clauzadeana macula
• Aspicilia multipunctata (Vain.) R.Sant. — Beringian Chukotka.
• Aspicilia nordlandica (H.Magn.) Degel. — Severnaya Zemlya, Beringian Chukotka.
• Aspicilia novaiae-semliae (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia obtecta (Vain.) Hav. >>> Hymenelia obtecta
• Aspicilia ochrofusca (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia peripterodes (Nyl.) Oxner — Beringian Chukotka.
• Aspicilia perradiata (Nyl.) Hue — Zemlya Frantsa-Iosifa, Novaya Zemlya, Taimyr, Novosibirskiye Islands, Wrangel Island, Beringian Chukotka.
• Aspicilia phaeops (Nyl.) Stein >>> Lecidea phaeops
• Aspicilia plicigera (Zahlbr.) Räsänen — Novaya Zemlya, Severnaya Zemlya, Novosibirskiye Islands, Wrangel Island.
• Aspicilia polychroma Anzi — Novaya Zemlya, Kharaulakh area, Novosibirskiye Islands.
• Aspicilia polychroma Anzi var. candida Anzi >>> Aspicilia candida
• Aspicilia prevostii (Duby) Anzi >>> Hymenelia epulotica
• Aspicilia reticulata Kremp. — Yana-Kolyma area.
• Aspicilia rosulata Körb. — Zemlya Frantsa-Iosifa, Novaya Zemlya, Taimyr, Beringian Chukotka.
• Aspicilia ryrkaipiae (H.Magn.) Oxner — Beringian Chukotka.
• Aspicilia stygioplaca (Nyl.) Hue >>> Aspicilia subradians
• Aspicilia subarctica (H.Magn.) Creveld — Novosibirskiye Islands.
• Aspicilia subdepressa (Nyl.) Arnold — Beringian Chukotka.
• Aspicilia subdissentiens (Nyl.) Oxner >>> Amygdalaria subdissentiens
• Aspicilia sublapponica (Zahlbr.) Oxner — Novaya Zemlya, Taimyr, Severnaya Zemlya, Beringian Chukotka.
• Aspicilia subplicigera (H.Magn.) Oxner — Novaya Zemlya, Taimyr, Severnaya Zemlya, Novosibirskiye Islands.
• Aspicilia subradians (Nyl.) Hue — Yamal-Gydan area, Beringian Chukotka.
• Aspicilia subradiascens (Nyl.) Hue >>> Aspicilia subradians
• Aspicilia subsorediza (Lynge) R.Sant. >>> Bellemerea subsorediza
• Aspicilia supertegens Arnold — Novaya Zemlya, Beringian Chukotka.
• Aspicilia syernaiae (H.Magn.) Oxner — Novaya Zemlya.
• Aspicilia tromsoeënsis (H.Magn.) Räsänen — Yana-Kolyma area.
• Aspicilia vaginans (Zahlbr.) Oxner — Novaya Zemlya.
• Aspicilia valpellinensis de Lesd. — Novaya Zemlya.
• Aspicilia verruculosa Kremp. — Polar Ural, Novaya Zemlya.
• Aspicilia virginea Hue — Novaya Zemlya.