Soderstrom, , N. A. KONSTANTINOVA, A. HAGBORG, T. PRESTO, K. HASSEL & M. VON KONRAT, N. A. KONSTANTINOVA, A. HAGBORG, T. PRESTO, K. HASSEL & M. VON KONRAT

362 L SÖDERSTRÖM, N.A. KONSTANTINOVA, A. HAGBORG, T. PRESTØ, K. HASSEL & M. VON KONRAT

— Prins Karls Forland : North facing slope Fullittknausen Mountain (78°32’08"N, 11°22’13"E), cliffs under bird colony, on soil and peat. 6.VIII.2016 Savchenko SA16-36 - 2 a ( KPABG 121477 About KPABG ). New to Prins Karls Forland GoogleMaps .

Marchantia romanica (Radian) D.G.Long, Crand.-Stotl., L.L.Forrest et J.C.Villarreal

— Spitsbergen , Haakon VII Land : Reinsdyrflya, south of Velkomstvarden (79°50’N, 13°48’E), 20.VIII.1974 Frisvoll, det. Konstantinova 2016 ( TRH B73834 View Materials /1). New to Haakon VII Land GoogleMaps .

— Spitsbergen, Oscar II Land: Brøggerhalvøya, innermost of Åmdalen (78°52’N, 11°46’E). 29.VII.1974 Frisvoll, det. Konstantinova 2016 ( TRH B73843 View Materials /1). New to Oscar II Land GoogleMaps .

Marsupella condensata (Ångstr. ex C.Hartm.) Lindb. ex Kaal.

— Nordaustlandet , Prins Oscars Land : east coast of Rijp Fjorden , north faced cliffs of Bluffvarden Mount on southern bank of Heieren Lake (80°12’39"N, 22°28’31"E), slope mount, on muddy rocks in mossy bed of temperate stream. 2006.VII.04 Konstantinova & Savchenko K78-1 f-15 ( KPABG 122999 About KPABG ). New to Nordaustlandet GoogleMaps .

Mesoptychia badensis (Gottsche ex Rabenh.) L.Söderstr. et Váňa

— Spitsbergen, Dickson Land: Nordfjorden. Kapp Wijk, on the shore close to Oxaashytta (78°34’N, 15°14’E), 30.VI.1973 Frisvoll, det. Konstantinova 2016 ( TRH B74044 View Materials /1). New to Dickson Land GoogleMaps .

— Spitsbergen, Sørkapp Land: Stormbukta (76°43’05"N, 16°18’46"E), the gentle slope of the northern exposure to the stream valley, the seepage gravely soil, between small rocks. 14.VIII.2018 Konstantinova & Savchenko K8-3 - 18 ( KPABG 123552 About KPABG ). New to Sørkapp Land GoogleMaps .

Mesoptychia collaris (Nees) L.Söderstr. et Váňa

— Spitsbergen, Dickson Land: Billefjorden. Pyramiden, northern coast of Mimerbukta, the bottom of Pyramida Mtn. (78°39’34"N, 16°24’52"E), south-east facing slope, Cassiope-Dryas -lichen community with many stones, on spot of fine earth, between small rocks. 25.VII.2008 Konstantinova K22-2 - 08 ( KPABG 118856 About KPABG )]. New to Dickson Land GoogleMaps .

— Spitsbergen, Haakon VII Land: Bockfjorden. At the end of Karlsbremorena inland of Trollkjeldene (79°23’51"N, 13°27’59"E), wet sand at a stream. 13.VIII.1974 Frisvoll 74050a ( KPABG 122652 About KPABG ). New to Haakon VII Land GoogleMaps .

— Spitsbergen, Sørkapp Land: Stormbukta (76°42’53"N, 16°19’02"E), hollow, the bed of a temporary watercourse, at base of rock. 14.VIII.2018 Konstantinova & Savchenko K5-1 a- 18 ( KPABG 123543 About KPABG ). New to Sørkapp Land GoogleMaps .

Mesoptychia gillmanii (Austin) L.Söderstr. et Váňa

— Spitsbergen, Wedel Jarlsberg Land: Dunderbukta, Dunderdalen northern part (77°28’45"N, 14°01’53"E), Ptilidium dominated tundra, on loamy soil on nonsorted circle. 16.VIII.2018 Konstantinova & Savchenko K20-3 b-18 ( KPABG 123614 About KPABG ). New to Wedel Jarlsberg Land GoogleMaps .

Mesoptychia heterocolpos (Thed. ex Hartm.) L.Söderstr. et Váňa var. heterocolpos

— Spitsbergen, Nathorst Land: Bellsund. Van Keulenfjorden. Strandvollsletta (77°37’22"N, 14°54’18"E), steep slope, south exposure covered by mosses with scattered Oxyria digyna, Polygonum viviparum, Saxifraga oppositifolia , between gravel on loamy soil. 19.VIII.2018 Konstantinova & Savchenko K50- 3d-18 (KPABG 123730). New to Nathorst Land.

Mesoptychia heterocolpos var. arctica (S.W.Arnell) L.Söderstr. et Váňa.

— Nordaustlandet, Gustav V Land: Murchison Fjord, Kinnvika, west slope of Raudstupet Mtn. (80°02’38"N, 18°33’23"E), 24.VII.1910 Konstantinova K9-6 - 10 ( KPABG 114688 About KPABG ). New to Nordaustlandet GoogleMaps .

— Spitsbergen, Dickson Land: Billefjorden. Pyramiden, middle part of Mimerdalen, right bank of Mimerelva (78°38’40"N, 16°08’57"E), huge depression at the bottom of second river terrace, on left side of road. În soil (1-3 cm) on side of rock on slope. 2.VIII.2008 Konstantinova K92-4 b-08 ( KPABG 116590 About KPABG ). New to Dickson Land GoogleMaps .

Mesoptychia heterocolpos var. harpanthoides (Bryhn et Kaal.) L.Söderstr. et Váňa

— Nordaustlandet , Prins Oscars Land : Innvika Bay , south-west coast of Depotlaguna, right bank of Ringgåsdalen River (80°06’46"N, 23°03’40"E), north facing slope to the river. 23.VII.2011 Konstantinova K303-2 - 11 ( KPABG 115398 About KPABG ). New to Nordaustlandet GoogleMaps .

— Spitsbergen, Dickson Land: Billefjorden. Pyramiden, middle part of Mimerdalen, right bank of Mimerelva (78°38’40"N, 16°08’57"E), huge depression at the bottom of second river terrace, on left side of road. On rocks between mosses. 2.VIII.2008 Konstantinova K90-2 - 08 ( KPABG 118865 About KPABG ). New to Dickson Land GoogleMaps .

— Spitsbergen, Nathorst Land : Bellsund. Van Keulenfjorden. Strandvollsletta (77°37’22"N, 14°54’18"E), hollow with huge rocks and small stream, rock field at base of slope, on rock. 19.VIII.2018 Konstantinova & Savchenko K57-2 GoogleMaps a-18 ( KPABG 123721 About KPABG ) ].

— Spitsbergen, Nordenskiöld Land: Adventdalen, Gruve 7 fjellet (78°09’48"N, 16°04’58"E). Steep snowbed community. 27.VII.2013 Hassel, det. Konstantinova 2016 ( TRH B37527 / 2). New to Nordenskiöld Land GoogleMaps .

— Spitsbergen, Ny-Friesland: Ringhorndalen, Dellingstupa. In the mossy run-off next to the Cassiope heath. 13.VIII.2015 Bronken Eidesen, det. Söderström 2021 (TRH B38901/2). New to Ny-Friesland.

— Spitsbergen , Sørkapp Land : South coast Hornsund Bay, at the base of Krykkjestupet (76°57’54"N, 15°59’33"E), seeping cliffs under bird colonies, on humus and fine earth between rocks. 15.VIII.2018 Konstantinova & Savchenko K18-1 - 18 ( KPABG 123478 About KPABG ). New to Sørkapp Land GoogleMaps .

— Spitsbergen, Wedel Jarlsberg Land: Dunderbukta, Dunderdalen, northern part (77°28’47"N, 14°02’20"E), at base of slope, on huge rock covered by Ptilidium and lichens. 16.VIII.2018 Konstantinova & Savchenko K28-1 a-18 ( KPABG 123628 About KPABG ). New to Wedel Jarlsberg Land GoogleMaps .

Mesoptychia sahlbergii (Lindb. et Arnell) A.Evans

— Spitsbergen, Nordenskiöld Land: Sassendalen, 2-3 km SSE of Fredheim (78°18’N, 17°00’E), along a SW exposed, small spring on limestone with Carex saxatilis , Fissidens adianthoides & Meesia triquetra . 12.VIII1986 Elvebakk 86:558 (TROM 410381/ 1). New to Nordenskiöld Land.

Nardia geoscyphus (De Not.) Lindb.

— Spitsbergen, Heer Land: Van Mijenfjorden. Rindersbukta. Ottoneset (77°50’14"N, 16°49’20"E), Salix polaris –herbs ( Festuca arctica, Bistorta viviparum, Oxyria digyna ) with Scapania obcordata dominated in the ground cover, on gentle slope, on muddy ground. 17.VIII.2018 Konstantinova & Savchenko K35-2-18 (KPABG 123640). New to Heer Land.

Neoorthocaulis hyperboreus (R.M.Schust.) L.Söderstr., De Roo et Hedd. New to Svalbard.

— Spitsbergen, Albert I Land: Lilliehöökfjorden. Ved Hajern (Signehamna) (79°16’N 11°31’E). 22. VII GoogleMaps .1974 Frisvoll, det. Konstantinova 2016, conf. Söderström & Hassel 2021 ( TRH B74085 /1) .

Checklist of liverworts on Svalbard 363

— Spitsbergen, Dickson Land: Sauriedalen, Ibsenfjella V (78°33’06"N, 15°32’30"E), 31.VII.1973 GoogleMaps Frisvoll 74084 ( KPABG 122647 About KPABG ) .

— Spitsbergen, Nathorst Land : Bellsund. Van Keulenfjorden. Strandvollsletta (77°37’22"N, 14°54’18"E), hollow with huge rocks and small stream, rock field at base of slope, on rock. 19.VIII.2018 Konstantinova & Savchenko K57-1 - 18 ( KPABG 123691 About KPABG ) GoogleMaps ].

— Spitsbergen, Nordenskiöld Land, Bjørndalen, on the E side, c. 500 m from the sea, in rich fen, 25 m a.s.l. (78°13’N, 15°19" E), 19.VII.1977 Frisvoll, det. Konstantinova 2016, conf. Söderström & Hassel 2021 ( TRH B73810 View Materials )

— Prins Karls Forland : South-east slope of Alfred Larsentoppen Mountain (78°32’59"N, 11°11’58"E), on overgrowing plot of slope. 8.VIII.2016 Savchenko SA16-44 - 1 GoogleMaps c ( KPABG 121526 About KPABG ) .

— Spitsbergen, Sørkapp Land: Stormbukta (76°43’11"N, 16°18’06"E), boggy coastal glacial terrace, at base of cliff, un- der rock, on rock. 14.VIII.2018 Konstantinova & Savchenko K11-1 GoogleMaps d-18 ( KPABG 123570 About KPABG ) ].

— Spitsbergen, Wedel Jarlsberg Land: Dunderbukta, Dunderdalen, northern part (77°28’48"N, 14°02’10"E), earth hummocks at base of gentle slope, on waterlogged soil. 16.VIII.2018 Konstantinova & Savchenko K21-2 - 18 ( KPABG 123616 About KPABG ) GoogleMaps

Odontoschisma elongatum (Lindb.) A.Evans

— Nordaustlandet , Prins Oscars Land : Innvika Bay . North-west coast of Depotlaguna, left bank of Ringgåsdalen River (80°07’00"N, 23°03’23"E), valley of rocky stream on terrace. 30.VII.1911 Konstantinova K336-2 a-11 ( KPABG 115441 About KPABG ), New to Nordaustlandet GoogleMaps .

Odontoschisma macounii (Austin) Underw.

— Nordaustlandet, Gustav V Land: Laponiahalvøya, Depotvika (80°23’N 19°43’E), Phippsia algida snow patch, 20.VIII.1979 Brattbakk ( TRH B19085 View Materials ). New to Nordaustlandet GoogleMaps .

— Nordaustlandet , Prins Oscars Land : The valley of an unnamed lake between Bluffvarden and the Sanfordhøgdene hill (80°13’05"N, 22°29’39"E). 3.VIII.2006 Konstantinova K65-3 - 06 ( KPABG 111780 About KPABG ) GoogleMaps .

— Spitsbergen, Wedel Jarlsberg Land: Recherchefjorden. Lagerneset (77°31’32"N, 14°45’54"E), river terrace, patterned ground tundra on gentle slope, on frost hollows, in crevices. 18.VIII.2018 Konstantinova & Savchenko K45-1 b-18 ( KPABG 123657 About KPABG ). New to Wedel Jarlsberg Land GoogleMaps .

Peltolepis quadrata (Saut.) Müll.Frib.

— Spitsbergen, Nathorst Land: Bellsund. Van Keulenfjorden. Strandvollsletta (77°37’22"N, 14°54’18"E), steep slope, south exposure covered by mosses with scattered Oxyria digyna, Polygonum viviparum, Saxifraga oppositifolia , between gravel on loamy soil. 19.VIII.2018 Konstantinova & Savchenko K50- 5a-18 (KPABG 123680)]. New to Nathorst Land.

— Spitsbergen, Sørkapp Land: Stormbukta (76°43’11"N, 16°18’06"E), the gentle slope of the northern exposure to the stream valley, the seepage gravelly soil, between small rocks. 14.VIII.2018 Konstantinova & Savchenko K8-3 - 18 ( KPABG 123552 About KPABG ). New to Sørkapp Land GoogleMaps .

— Spitsbergen, Wedel Jarlsberg Land: Dunderbukta, Dunderdalen northern part (77°28’48"N, 14°02’10"E), Ptilidium dominated tundra, on loamy soil on nonsorted circle. 16.VIII.2018 Konstantinova & Savchenko K20-2 c-18 ( KPABG 123610 About KPABG ). New to Wedel Jarlsberg Land GoogleMaps .

Ptilidium ciliare (L.) Hampe.

— Nordaustlandet, Prins Oscars Land: Bluffvarden (80°12’40"N, 22°27’39"E), the slope of the north-western exposure. 6.VIII.2006 Konstantinova Ę109-1 ŕ-06 ( KPABG 111802 About KPABG ). New to Prins Oscars Land GoogleMaps .

— Spitsbergen, Andrée Land: Jakobsenbukta (79°36’N, 14°12’E), 12.VIII.1958 RØnning, det. Frisvoll 1973 ( TRH B74897 /5). New to Andrée Land GoogleMaps .

— Spitsbergen, Dickson Land: Nordfjorden, at Hagahytta (78°29’N, 15°20’E), 9.VII.1973 Frisvoll ( TRH B73852 View Materials /1). New to Dickson Land although mentioned as occurring the by Pyramiden by Belkina et al. (2015) without any further details GoogleMaps .

— Spitsbergen, James Land: Ekmanfjorden. Flintholmen (78°39’N 14°3’E), 17.VII.1973 Frisvoll ( TRH B73849 View Materials /1). New to James Land GoogleMaps .

Riccardia chamedryfolia (With.) Grolle

— Spitsbergen, Nordenskiöld Land, Bolterdalen, partly dead Sphagnum hummock (78°09’03" N, 15°59’18" E), 114 m a.s.l. 21.VIII.2019 Hassel ( TRH B116276 /1). Genus new to Svalbard GoogleMaps .

— Spitsbergen, Nordenskiöld Land, Colesbukta, peaty soil on moist tundra, together with Schistochilopsis opacifolia (78°07’21"N, 15°01’02"E). 23.VIII.2019 Hassel (TRH B695465/1). NOTE: The nearest known locality is in northern Norway. The specimens were typical Riccardia chamedryfolia with some shoots tri-pinnate and with a large oilbody in all cells.

Saccobasis polita (Nees) H.Buch

— Spitsbergen, Haakon VII Land: Bockfjorden. Trollkjeldene (79°23’N 13°27’E), svovelkjelder, 5.VIII.1974 Frisvoll ( TRH B74194 /1). New to Haakon VII Land GoogleMaps .

— Spitsbergen, Nordenskiöld Land: Adventdalen, Longyearbyen, Nybyen by “Huset” (78°12’29"N, 15°35’22"E), wet part in Cassiope heath, 22.VII. 2013 Hassel ( TRH B37352 /1). New to Nordenskiöld Land GoogleMaps .

Saccobasis polymorpha (R.M.Schust.) Schljakov.

— Spitsbergen, Sørkapp Land: Stormbukta (76°43’11"N, 16°18’06"E) boggy coastal glacial terrace, at base of cliff, un- der rock, on rock. 14.VIII.2018 Konstantinova & Savchenko K11-1 a-18 ( KPABG 123564 About KPABG ). New to Sørkapp Land GoogleMaps .

Sauteria alpina (Nees) Nees.

— Spitsbergen, Bünsow Land: Gipsdalen, middle part, to S of river (78°30’N 16°52’E), snow-bed, below ridge, on calcareous silt. 18.VII.1985 EngelskjØn ( TROM 340446 About TROM /1). New to Bünsow Land GoogleMaps .

— Spitsbergen, James Land: Ekmanfjorden. Flintholmen (78°39’N 14°35'” E), 17.VII.1973 Frisvoll, det. N. A. Konstantinova 2016 ( TRH B73908 View Materials /1). New to James Land .

— Spitsbergen, Nordenskiöld Land: Van Mijenfjorden , Braganzavågen (77°55’N, 16°51’E). 6.VIII.1986 Schwenke & Øvstedal ( TROM 340417 About TROM /1). New to Nordenskiöld Land GoogleMaps .

Scapania cuspiduligera (Nees) Müll.Frib.

— Nordaustlandet , Prins Oscars Land : Innvika Bay , south-west coast of Depotlaguna, right bank of Ringgåsdalen River (80°07’00"N, 23°03’23"E), north facing slope to the river. 23.VII.2011 Konstantinova K303-1 - 11 ( KPABG 115397 About KPABG ). New to Nordaustlandet GoogleMaps .

— Spitsbergen, Nathorst Land : Bellsund. Van Keulenfjorden. Strandvollsletta (77°37’22"N, 14°54’18"E), hollow with huge rocks and small stream, rock field at base of slope, on rock. 19.VIII.2018 Konstantinova & Savchenko ( KPABG 123696 About KPABG ). New to Nathorst Land GoogleMaps .

— Spitsbergen, Wedel Jarlsberg Land: Dunderbukta, Dunderdalen, northern part (77°28’48"N, 14°02’10"E), on side of moss covered rock, on rock. 16.VIII.2018 Konstantinova & Savchenko