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16 Stefan Elonan et al. GRAPHTS SCRTPTA 12 (2000) Figure 1. The first of the two localities in Arild (NW Skine, Sweden), wherc Moelleropsis nebulosa (Hoffrn.) Gyeln. was found in 1998. The locality is photographed from the wsw, and Moelleropsis occurs on the right-hand part ofthe diabasic rock. -photo: patrik Fr0d€n. The localities At the first locality (Figure l), Moelleropsis nebulosa was found on a diabasic rock situated 25 m from the sea and 2-7 above sea level. The locality was partly protected by deciduous trees on the S and SE side s. Moel- Ieropsis occurred on thin mineral soil covering small shelves of the sunlit Sw-facing side of the rock, which had an average inclination of c. 50o. The inclination of the individual shelves varied from l0 to almost 90o. Moelleropsis apparently favoured sites where it enjoyed a slight protection by other plants, e. g., just below grass tufts, under the leaves of Plantago lanceolata, or under thin, crawling Cotoneaster shrubs. We counted I I thalli ranging from I to 7 cm2 in size. The larger thalli had more or less abundant apothecia (Figure 2). The following vascular plants were observed in the immediate vicinity of the Moelleropsis population: Sedum acre, Potentilla argentea s. lat., Cotoneaster kullensis, Galium ventm, Armeria maritima, Campanula rotundifolia, Thymus serpyllum, Plantago lanceolata, Poa compressa, and Aira praecox. The only other lichens observed were depauperate specimens of Cladonia species. At the second, close-by locality, Moelleropsis occurred on a rather low diabasic rock in overgrown pasture-land 40 m from and 5 m above the sea. The north side of the rock, facing the sea, was protected by young deciduous trees. On the west side of the rock was a thicket of Prunus spinosa, Lonicera caprtfolium, and Rubzs species. Moelleropsis was found on sunlit, naked mineral soil on the western and northwestern sides of the rock, which had an average inclination of 45o. The surfaces where Moelleropsis grows had an inclination of 20 to almost 90". The thalli were found between pebbles or under protecting grass tufts. Only three thalli, ranging in size from I to 2 cnf , were observed, none of which had apothecia. Associated vascular
GRAPHTS SCRTPTA 12 (2000) Moelleropsis nebulosa l7 Figure 2. One of the specimens of Moelleropsis nebulosa occurring on basic mineral soil at the first of the two localities in Arild (the locality illustrated in Figure l). Note the single apothecium at the top of the specimen. Photo: Patrik Friid6n. plants were Campanula rotundifolia, Thymus serpyllum, Galium verum, Plantago lanceolata, Hieracium pilosella, Helictotrichon pratense, Festuca ovina, Agrostis capillaris, and Poa compressa. Other lichens occuffed very sparingly; only a few depauperate thalli of Cladonia chlorophaea (Fl6rke ex Sommerf.) Spreng. were observed. Localities and collections. Sweden. Skane: Brunnby par., Arild, c. 200 m E of the chapel, SW-facing slope of coastal diabasic rock, on thin soil on rock-shelves, RN (Swedish Grid) 62431 13000, alt. 2-7 m, 3 September 1998, leg. Ekman 3426, Frriddn & Westberg (LD), the collection represents a part of one of the thalli observed. Arild, c. 600 m ESE of the chapel, W- and NW-facing coastal diabasic rock, on thin mineral soil covering the rock; RN (Swedish Grid) 62429 13003, alt. 5 m, 3 September 1998, Ekman, Frciddn & Westberg, no material was collected. Threats against the present populations In a long perspective, the most powerful threat against the present populations comes from shading by invading trees and shrubs. Both localities have young deciduous trees in the immediate vicinity, which have obviously become established fairly recently. The first locality is partly kept free from competitive shrubs and trees due to wear by outdoor recreation. At the second locality, the situation is already critical. If the overgrowing continues and the localities become shaded, this will certainly destroy the Moelleropsis populations.
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Page 3 and 4: On the identity of Ocellularia atla
Page 5 and 6: The lichens on gneiss and diabase o
Page 7 and 8: GRAPHTS SCRTPTA 12 (2000) supralitt
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Page 11 and 12: Influence of air-drying and storage
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Page 15 and 16: GRAPHTS SCRIPTA 12 (2000) dominated
Page 17: Moelleropsis nebulosa rediscovered
Page 21 and 22: Eopyrenula septemseptata new to Swe
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Page 31 and 32: Nya lavfynd frfln Halland och Smila
Page 33: GRAPHTS SCRTPTA 12 (2000) Gustavsso
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