Additions to the lichen flora of Finland. II. Calcareous rocks and ...

More documents

Recommendations

Info

22 Juha Pykälä GRAPHIS SCRIPTA 19 (2007) Specimens examined: Pappila, E of Tytyri lime quarry, open quarry waste soil (c. 10 years old), on clay soil heap, scarce, 60°16'N, 24°04'E, 27.X.2001, 21100, conf. P. M. Jørgensen 2006; Hermala, Kalkkimäki, road cutting of calcareous rock, on thin soil over a rock, scarce, 60°13'N, 23°51'E, 18.VI.2003, 23017, conf. P. M. Jørgensen 2006. Leptogium magnussonii This species was described from Sweden and Norway by Jørgensen (1994) from siliceous rocks with fresh-water seepage. Later L. magnussonii has been reported from several other European countries: Austria (Berger 1996), Portugal (van den Boom & Giralt 1996), Belgium, Luxembourg, France and Germany (Sérusiaux et al. 1999), Czech (Guttova 2000), Bulgaria (Pisūt 2001) and Hungary (Czeika et al. 2004). In Sweden L. magnussonii mainly grows on open, grazed, flowing water influenced rocks (Hultengren 1999). The locality in Lohja is situated at the edge of an arable field. The population is just above rock cutting of a road bank or perhaps partly on previously cut rock. Specimen examined: Paloniemi, Luhtalahti, on SW-facing calciferous quartz-feldspar gneissic rock, scarce, 60°16'N, 24°01'E, 2.IX.1993, 12263, det. P. M. Jørgensen 1998. Moelleropsis nebulosa New to Finland. There are very few recent finds of M. nebulosa in Fennoscandia (Ekman et al. 2000). The species is red-listed in Sweden (Gärdenfors 2005). M. nebulosa has also declined in the British Isles (Purvis & James 1992). No apothecia were found in the Finnish populations, which were small. The species is easily overlooked and probably more common than is known at present. However, due to eutrophication and overgrowth after abandonment of grasslands M. nebulosa is probably also in decline in Finland. Specimens examined: Paavola, N of Paavola school, small calcareous rock, on thin soil, scarce, 60°13'N, 23°53'E, 18.VI.2005, 27040; Marttila, calcareous rock, on thin soil, scarce, 60°14'N, 23°52'E, 21.VI.2005, 27082. Varsinais- Suomi: Karjalohja, Pyöli, Niku, calcareous rock, on thin soil, scarce, 60°12'N, 23°48'E, 6.VII.2004, 24982; conf. P. M. Jørgensen 2006; Halikko, Kuttila, Päivärinne, SW slope, mesic semi-natural grassland grazed by cattle, on clayey soil, 60°28'N, 23°00'E, 24.VIII.2004, 25563; conf. P. M. Jørgensen 2006. Polyblastia agraria New to Finland. P. agraria is a rare calcicolous species found in central and northern Europe. It is known from Sweden (Santesson et al. 2004), the British Isles (Swinscow 1971), Poland (Ceynowa-Gieldon 1998), Czech (Vězda & Liskǎ 1999), Lithuania (Motiejūnaité et al. 1998) and Denmark (Alstrup et al. 2004). P. agraria occurred in the study area on moribund lichen or bryophyte thalli in calcareous habitats. Populations appeared to be small. Due to its minute size the species is difficult to observe in the field. Specimens examined: Hermala, Kyttälä, flat calcareous rock, on dead thallus of Peltigera, 60°13'N, 23°51'E, 6.VII.2004, 24984; Vappula, N of Väinölä, on bank of Lohjanharju road, 60°13'N, 24°01'E, 30.IX.2004, within 25935, Vezdaea acicularis (Pykälä 2006); Hermala, Tolpoonkallio, flat calcareous rock, thin soil, on moribund lichen thallus, scarce, 60°13'N, 23°50'E, 18.VI.2005, 27059; Skraatila, Päiväranta SW, on calcareous rock, among bryophytes, scarce, 60°15'N, 23°53'E, 24.VIII.2005, 27771. Polyblastia helvetica New to Finland. P. helvetica is a rare arcticalpine species. It is known from the Alps (Zschacke 1933), Carpathians (Bielczyk et al. 2004, Lisická 2005), Scotland (Swinscow 1971), the Faroe Islands (Degelius 1982), Greenland (Hansen 1998) and Iceland (Berger 2000). Only
GRAPHIS SCRIPTA 19 (2007) Additions the the lichen flora of Finland 23 one previous collection from northern Norway is known from Fennoscandia (Degelius 1982). The find in Finland on the border of the southern and hemiboreal vegetation zones is a considerable range extension for this arctic-alpine species. P. helvetica is easily recognized by having only two very large, brown spores per ascus (Zschacke 1933, Swinscow 1971). In the Lohja collection spore size was 75–94 × 30–37 µm. Specimen examined: Ojamo, Ojamo lime quarry, on open quarry waste land on stony and gravelly soil, scarce, 60°14'N, 24°02'E, 18.IV.2005, 26594. Polyblastia sepulta New to Finland. P. sepulta is a calcicolous lichen known from the central European mountains (Zschacke 1933, Moruzi et al. 1967) and Norway and Sweden (Santesson et al. 2004). Specimens examined: Lohja, Tytyri lime quarry, on flat calcareous rock, 60°16'N, 24°04'E, 20.IV.2005, 26619 & J. Rikkinen; Lohja, Pitkäniemi, calcareous rock, 60°15'N, 24°02'E, 19.VIII.2005, on NW-facing wall, 27630, on Wfacing wall of calcareous boulder, 27643, and on flat rock on lakeshore, 27557. Pseudosagedia grandis New to Finland. P. grandis is a rare species of wet siliceous or moderately calcareous rocks of shady habitats (Botnen & Tønsberg 1988). It is known from Germany, Scotland, Sweden and Norway (Thor 1999a). The species has not been refound in its only known Swedish locality (Thor 1999a). Perithecia of P. grandis are large (0.5– 0.8 mm). Thus, the species is rather conspicuous. In Lohja P. grandis grew sparsely on limeinfluenced gneissic rock a few meters from the shore of lake Lohjanjärvi. Before the lowering of the water table of lake Lohjanjärvi c. 150 years ago, the site was probably situated in the littoral zone. The small population may be of relict occurrence. Specimen examined: Paloniemi, Muutettavanniemi, on small NW-facing wall of limeinfluenced gneiss rock, very scarce, 60°15'N, 24°01'E, 28.IV.2005, 26676. Pseudosagedia linearis New to Finland. P. linearis is rare in Fennoscandia, and is known in Sweden only from Gotland and Öland (Santesson et al. 2004). The Finnish locality was shaded by deciduous trees. P. linearis grew on an overhanging surface accompanied by the rare shade-demanding bryophyte Seligeria donniana. Specimen examined: Torhola, Torhola cave, on a SW-facing wall of calcareous rock, scarce, 60°15'N, 23°51'E, 16.VII.2004, 25061. Sarcogyne distinguenda New to Finland. S. distinguenda is a rarely collected species of calcareous rocks in Norway and Sweden (Botnen & Tønsberg 1988, Thor 1999b) and has also been reported from Austria (Hafellner & Türk 2001). In Norway it has been collected once on cement (Thor 1999b). Specimens examined: Paloniemi, Luhtalahti, road cutting of calcareous quartz-feldspar gneissic rock, on a SW-facing rock wall, scarce, 60°16'N, 24°01'E, 28.IV.2005, 26710; Laakspohja, W of Lempolantie road, pine plantation, on concrete boulder, 60°15'N, 24°06'E, 30.X. 2005, 28238. Thelidium cataractarum New to Finland. The species may have been overlooked, because it is macroscopically similar to Verrucaria muralis. The Lohja locality was strongly enriched by calcareous dust. T. cataractarum occurred sparsely with the more abundant V. muralis. Specimens examined: Lohja, by the Tytyri lime processing factory, on a road cutting with calcareous rock, 60°15'N, 24°04'E, 14.I.2005, 26204. Uusimaa: Helsinki, Vuosaari, Kalkkisaari, calcareous rock by a lime quarry, on pebble, 60°13'N, 25°11'E, 20.IX.2005, 27954.
Page 1 and 2: Additions to the lichen flora of Fi
Page 3 and 4: GRAPHIS SCRIPTA 19 (2007) Additions
Page 5: GRAPHIS SCRIPTA 19 (2007) Additions

Additions to the lichen flora of Finland. II. Calcareous rocks and ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?