Rinodinais a widespread, polyphyletic genus of crustosePhysciaceaewithc. 300 species worldwide. A major missing link in understanding its global biogeography has been eastern Asia where the genus has never been systematically revised. Here we review specimen and literature records forRinodinafor north-eastern Asia (Russian Far East, Japan and the Korean Peninsula) and recognize 43 species. We describe two species,R. hypobadiaandR. orientalis, as new to science.Rinodina hypobadiais distinguished by its pigmented hypothecium,Dirinaria-type ascospores and pannarin in both thallus and epihymenium.Rinodina orientalisis characterized by its erumpent apothecia that remain broadly attached, with discs sometimes becoming convex and excluding the thalline margins, ascospores belonging to thePhyscia-type and secondary metabolites absent. Nine other species are reported from the region for the first time. These includeR. dolichospora,R. freyi,R. metaboliza,R. sicula,R. subminutaandR. willeyi. Of particular biogeographical interest are three additional new records that have western North American–eastern Asian distributions: the corticolous speciesR. endospora,R. macrosporaandR. megistospora. Six species have the better known eastern North American–eastern Asian distributions:R. ascociscana(syn.R. akagiensis,R. melancholica),R. buckii,R. chrysidiata,R. subminuta,R. tenuis(syn.R. adirondackii) andR. willeyi, and two have eastern North American–eastern Asian–European distributions:R. excrescensandR. moziana(syn.R. destituta,R. vezdae). Our study begins to close one of the largest gaps in our knowledge of circumboreal species distributions inRinodinaand, together with previous studies in North America and Europe, provides new insights into circumboreal crustose lichen biogeography.Rinodina cinereovirens(syn.R. turfaceavar. cinereovirens) is also reported as new to North America.

Investigations on lichen flora of some shrubs and dwarf shrubs were carried out on the base of more than 520 sample plots made from 2002 to 2008 on Kamchatka Peninsula. Totally 141 species and 2 varieties of lichens, calicioid and allied fungi were found on 28 species of the shrubs and dwarf shrubs. The lichen flora on Salix spp. is most diverse, represented by 108 species. Few lichens are evidently restricted to the shrubs and dwarf shrubs: Biatora vacciniicola, Cheiromycina petri, Lecania cyrtellina, L. fuscella, Phaeocalicium interruptum. Eight species are first reported from Kamchatka: Agyrium rufum, Anzina carneonivea, Biatora chrysantha, Cheiromycina petri, Fuscopannaria confusa, Lecania fuscella, Lecidella xylophila, Phaeocalicium interruptum.

The lichen biota of the Ragusha River (protected area in Leningrad Region) is studied. In total 221 species (211 lichenized, 5 lichenicolous and 5 saprobic fungi) are listed. Lecanora perpruinosa is new to North-Western European Russia. Lathagrium fuscovirens, Pronectria erythrinella, Protoblastenia rupestris, Thelidium minutulum, T. zwackhii and Tremella hypogymniae are reported for the first time for Leningrad Region, and Ochrolechia bahusiensis for Eastern Leningrad Region. The most noteworthy part of lichen biota is the complex of 21 calcicolous lichens. Eleven of them are known in the region only from the Ragusha River valley.

We present an updated checklist for Konevets Island (Leningrad Region, Russia). The revealed lichen biota comprises 435 species, including 378 lichens, 46 lichenicolous fungi and 11 non-lichenized saprobic fungi, of which 31 species (27 lichens and 4 lichenicolous fungi) are known only from collections made by Veli Räsänen (1917, 1938). Acremonium hypholomatis is reported for the first time for Russia; Caloplaca soralifera, Trapelia corticola, and Muellerella lichenicola for Northwestern European Russia; and Bacidia vermifera, Lecanora mughicola, Micarea contexta, Pyrenochaeta xanthoriae, Rhizocarpon disporum, Stigmidium squamariae and Xylographa difformis for Leningrad Region. From lichenological point of view, the most valuable habitats of Konevets Island are old-growth spruce forests. The studied lichen biota is rich and diverse and exceptionally well-preserved in comparison to the mainland part of Karelian Isthmus. It definitely deserves protection.