Additions to the lichen flora of Finland. IV

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GRAPHIS SCRIPTA 20 (2008) Additions the the lichen flora of Finland 25 Lahokallio, stony shore of lake Lohjanjärvi, on exposed roots of A. glutinosa, 60°14′N, 24°00′E, 23.III.2007, 30500; Lohja, Paloniemi, S of Pirklahti, stony shore of lake Hormajärvi, on exposed roots of A. glutinosa, 60°17′N, 23°59′E, 26.IV.2007, 30727; Lohja, Paloniemi, Mustalahti, stony shore of lake Hormajärvi, on exposed thick root of A. glutinosa, 60°17′N, 23°59′E, 26.IV.2007, 30750; Lohja, Torhola, 400 m SE of Torhola cave, stony shore of lake Lohjanjärvi, on exposed thick roots of A. glutinosa, 60°15′N, 23°52′E, 20.VII.2007, 31526. Verrucaria vicinalis Arnold New to Fennoscandia. Description based on the Finnish specimen: thallus endolithic, pale, ± inconspicuous; perithecia 0.15−0.25 mm diam., 1/2−3/4-immersed; exciple pale; involucrellum covering half of the exciple or almost reaching to the base of the exciple; spores (10−)12−15 × 5−7 µm. The Finnish specimen matches well with the type specimen in H (Monte Castellano, 1878, Arnold). Specimen examined: Varsinais-Suomi: Pohja, Kuovila, 400 m SE of Kalkkuuninmäki, Picea abies-dominated forest, abandoned lime quarry, on 2 m high N-facing wall, 60°08′N, 23°24′E, 12.X.2006, 29800. Corrections to Pykälä (2007) Due to increased knowledge on Verrucaria species several of the Verrucaria determinations published by Pykälä (2007) have now unfortunately proved to be incorrect. Corrections are given below. Verrucaria caerulea Ten specimens were cited, but most of these belong to other species (to V. illinoisensis Servít 24674; reported new to Fennoscandia by Pykälä & Breuss (2008) or remain unidentified (23471, 23711, 24322, 26388, 26544, 27254, 28192). Two specimens (27373, 28053) are considered to belong to V. caerulea following the circumscription of the species by Orange (2008). Verrucaria floerkeana Three specimens were cited. One of these (25054) belongs to V. olivacella Servít (reported new to Fennoscandia by Pykälä & Breuss 2008). Specimen 22471 is close to V. dolosa, but has broader spores: 12−15(−17) × (6−)7−8 µm. Specimen 26686 has a rather thick involucrellum and its identity is uncertain. A recent collection (V, Karjaa, Knapsby, Mustio lime quarry, quarry waste field, on stones and pebbles, 60°10′N, 23°50′E, 2.VII.2009, 34524, 34526) with slightly larger exciple than in V. olivacella may belong to V. floerkeana. Verrucaria foveolata See under V. viridula below. Verrucaria fusconigrescens The identity of the only specimen cited is uncertain. The specimen has thicker and paler thallus and larger spores than in the type specimen of V. fusconigrescens (Forca Real, 1872, W. Nylander; H-NYL 2474). However, the intraspecific variation of V. fusconigrescens is poorly known. And it is even uncertain, if V. fusconigrescens is a species on calcareous or seashore rocks. Verrucaria hochstetteri See under V. viridula below. Verrucaria macrostoma The specimens reported (22861c, 24030) belong to V. viridula. V. macrostoma is thus excluded from the Finnish lichen flora. The absence of the species is somewhat surprising because it is widely distributed in Europe. Verrucaria maculiformis Ten specimens were reported by Pykälä (2007). However, most of these belong to V. fusca and V. memnonia (reported new to Finland by Pykälä & Breuss 2008). Four specimens (25124, 27253,
26 Juha Pykälä GRAPHIS SCRIPTA 22 (2010) 27399, 27573) probably belong to V. maculiformis. Verrucaria viridula V. viridula as well as V. hochstetteri and V. foveolata were partly erroneously treated by Pykälä (2007), because the description of the species in Foucard (2001) is partly misleading. According to Foucard the involucrellum of V. viridula is lacking or poorly developed around the ostiole. However, V. viridula has a 30–100 µm thick apical involucrellum (Breuss 2007). According to Foucard perithecia of V. foveolata and V. hochstetteri are pear-shaped (like in V. viridula), but in these species perithecia are not pear-shaped (see Orange 2008). All four specimens cited by Pykälä (2007) as V. hochstetteri belong to V. viridula. These specimens represent extreme forms of V. viridula with perithecia up to 0.7–0.8 mm high. After the revision the first find of V. hochstetteri is from Lohja, Hermala, Kalkkimäki 19.VII.2004, 25126. Furthermore, several specimens of V. foveolata (including the cited specimens 16818, 16826) belong to V. viridula. After the revision the first find of V. foveolata is from Lohja, Hermala, Kalkkimäki, 29.VIII.2003, 23443, 23470. V. viridula is more common on calcareous rocks of southern Finland than V. foveolata. V. viridula has now also been collected from concrete. Acknowledgements Othmar Breuss and Starri Heiðmarsson are acknowledged for constructive comments on the manuscript. References Boom, P. P. G. van den & Breuss, O. 2002. Lichenen van het zomerkamp in de Cantal (Frankrijk). Buxbaumiella 60: 3−16. Breuss, O. 1998. Drei neue Holz- und Borkenbewohnende Verrucaria-Arten mit einem Schlüssel der bisher bekannten Taxa. Linzer Biologische Beitrage 30: 831−836. Breuss, O. 2004. Neue Flechtenfunde, vorwiegend pyrenocarper Arten, aus Oberösterreich. Österreichische Zeitschrift für Pilzkunde 13: 267−275. Breuss, O. 2007. Verrucaria. In: Nash, T. H. III, Gries, C. & Bungartz, F. (eds), Lichen flora of the Greater Sonoran Desert Region. Volume III. Lichens Unlimited, Tempe, pp. 335−377. Breuss, O. 2008. Bemerkungen zu einigen Arten der Flechtengattung Verrucaria. Sauteria 15: 121−138. Ceynowa-Giełdon, M. 2007. Thelidium rimosulum (Verrucariaceae, lichenized Ascomycota), a new lichen species from Poland. Lichenologist 39: 217−220. Coppins, B. J. 1992. Arthonia Ach. (1806). In: Purvis, O. W., Coppins, B. J., Hawskworth, D. L., James, P. W. & Moore, D. M. (eds), The lichen flora of Great Britain and Ireland. Natural History Museum Publications & British Lichen Society, London, pp. 74−88. Czarnota, P. & Coppins, B. J. 2000. A new species of Agonimia and some interesting lichens from Gorce Mts (Western Beskidy Mts) new to Poland. Graphis Scripta 11: 56−60. Faltynowicz, W. 2003. The lichens, lichenicolous and allied fungi of Poland. An annotated checklist. W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow. Foucard, T. 2001. Svenska skorplavar och svampar som växer på dem. Interpublishing, Stockholm. Fröberg, L. 1989. The calcicolous lichens on the Great Alvar of Öland, Sweden. Dissertation, Lund. Gueidan, C., Savić, S., Thüs, H., Roux, C., Keller, C., Tibell, L., Prieto, M., Heiðmarsson, S., Breuss, O., Orange, A., Fröberg, L., Amtoft Wynns, A., Navarro- Rosinés, P., Krzewicka, B., Pykälä, J., Grube, M. & Lutzoni, F. 2009. Generic classification of the Verrucariaceae (Ascomycota) based on molecular and morphological evidence:
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Additions to the lichen flora of Finland. IV

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