Keywords: CLASSIFICATION/ REVIEW/ HISTORY
Abstract: [Review and comments on systems of lichen classification since Linneaus, including the view that integration of lichenized fungi in the fungal system of classification is not really possible. "Lichens thus need to be considered in an independent status of their own."]
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Keywords: PYXINE/ INDIA/ NEW TAXA
Abstract: 6 figures. [Treatment of 21 species; key. New: Pyxine austroindica sp. nov., P. berteriana (Fee) Imsh. var. himalaica var. nov., P. himalayensis sp. nov., P. keralensis sp. nov., P. nilgiriensis sp. nov., and P. palniensis sp. nov. In addition, four taxa are new reports for India.]
[Edit/Delete] [Upload PDF/URL] [ET: 76]
Keywords: NITROGEN FIXATION/ APPALACHIAN MOUNTAINS/ LOBARIA/ PHYCOBIONT/ PRODUCTION/ BIOMASS/ NORTH CAROLINA
Abstract: 6 tables. 2 figures. ["The bark of Aesculus octandra Marshal was the optimum habitat, particularly for the dominants Lobaria quercizans Michx. and Lobaria pulmonaria (L.) Hoffm. Lichen biomass in the gray beech forest commonly ranged from 7 to 9 kg ha-1 but was higher where Aesculus octandra was abundant. The annual contribution of ammonia nitrogen by lichens was roughly estimated to be 0.8 kg ha-1 for the gray beech forest in beech gaps." Several other lichens are mentioned.]
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Keywords: EPIPHYTE/ AIR POLLUTION/ FATTY ACID/ CHLOROPHYLL/ SYMBIOSIS
Abstract: 2 tables. 1 figure. [Thirteen species studied. "It is suggested that the sensitivity of lichens to air pollution is related to the degree of dependency of the mycobiont on the phycobiont as far as metabolic energy is concerned; in such a way that the stronger this dependency is, the more sensitive the lichen will be to air pollution."]
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Keywords: LOBARIA/ CHEMISTRY/ STICTICIN/ STICTACEAE
Abstract: 1 figure. [Sticticin is reported from Lobarai laetevirens and several other Stactaceae and its structure determined.]
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Abstract: [In Russian]
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Keywords: ALASKA/ POINT BARROW/ TUNDRA/ ARCTIC
Abstract: 7 figures. 2 tables. [Vegetational succession does not fit the most recent models but is controlled by the cold physical environment. Several lichen species are mentioned for the research site near Point Barrow, Alaska.]
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Keywords: CANADA/ YUKON/ NORTHWEST TERRITORIES/ PILOPHORUS/ MACROLICHEN/ ARCTIC
Abstract: 5 figures. 2 tables. [249 taxa; many new reports for the area. Pilophorus robustus reported new to Canada.]
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Keywords: LICHENOMETRY/ ANTARCTIC/ SOUTH SHETLAND ISLANDS/ RHIZOCARPON
Abstract: 3 figures. 1 table. [Study used growth of Rhizocarpon geographicum measuring thallus diameters. In English, Russian summary.]
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Keywords: LICHENOMETRY/ ANTARCTIC/ SOUTH SHETLAND ISLANDS/ RHIZOCARPON
Abstract: 2 tables. 3 figures. [Lichenometric study using measurements of Rhizocarpon geographicum.]
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Keywords: PHYSIOLOGY/ WATER RELATIONS/ TEMPERATURE/ CATALASE/ ENZYMES
Abstract: 6 figures. 1 table. [Study conducted on Cladonia mitis, Hypogymnia physodes, Peltigera canina and P. aphthosa. "Significant species distinctions in the enzyme activity are found. The lichen catalase activity changes are stated to be in direct proportion to the water content in the thallus. The catalase thermal stability determined in the preparation extracts reflects most completely the lichen physiological state under the effect of superoptimal temperatures and may be used for ecological characteristics of the species." In Ukrainian; English summary.]
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Keywords: NEUROPOGON/ CHEMISTRY/ ALIPHATIC ACIDS/ ISOMURONIC/ NEUROPOGOLIC/ KERGUELEN ISLANDS/ ANTARCTIC
Abstract: 1 table. Several unnumbered figures. [Two new aliphatic acids, isomuronic acid and neuropogolic acid, are described from Neuropogon trachycarpus from the Kerguelen Islands.]
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Keywords: OMPHALINA/ BASIDIOLICHEN/ ULTRASTRUCTURE/ MORPHOLOGY/ TEM
Abstract: 4 figures. [Reports the presence of dolipore septa and other ultrastructural details of both fungal and algal cells.]
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Keywords: BRITISH ISLES/ ENGLAND/ HISTORY/ ECOLOGY
Abstract: 10 figures. 3 tables. [The lichen flora of these central English counties has 400 species of which 57 have not been collected since 1960. Study includes historical and ecological notes as well as the annotated list of species.]
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Keywords: PSORA/ USSR/ NEW TAXA
Abstract: [Discussion of four species. New: Psora subconcava (H. Magn.) comb. nov.; in Russian.]
[Edit/Delete] [Upload PDF/URL] [ET: 2262]
Keywords: USSR/ TONINIA
Abstract: 1 table. [Comparison of Toninia groenlandica with T. tristis and T. tabacina; in Russian.]
[Edit/Delete] [Upload PDF/URL] [ET: 2261]
Keywords: NEWSLETTER/ IAL
Abstract: [News and views of lichenologists including the draft of the consitiution for the International Association for Lichenology.]
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Keywords: NEWSLETTER/ IAL/ SYMBIONTS/ CULTURE
Abstract: [News and views of lichenologists. Includes an editorial "The Amateur in Lichenology" and "Guide to Culture Collection of Lichen Symbionts."]
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Keywords: REVIEW
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Keywords: OZONE/ AIR POLLUTION/ PHYCOBIONT/ TECHNIQUE/ CHLOROPHYLL
Abstract: 1 table. [Paper shows that chlorophyll is unstable when extracted into methanol and that the results reported by Rostentreter & Ahmadjian (1977) on ozone fumigations may have been substantially influenced by a combination of oxidation and phaeophytinization under their exctraction and storage conditions.]
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Keywords: ECOLOGY/ TUNDRA/ ALASKA/ POINT BARROW
Abstract: 4 tables. 12 figures. [Lichens are mentioned for some of the study sites at Barrow, Alaska.]
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Keywords: XANTHORIA/ PHYCOBIONT/ BINDING PROTEINS/ CELL WALL/ SYMBIOSIS
Abstract: 1 table. 4 figures. [Specificity in binding patterns of the protein suggests that the protein may function in recognition of lichen symbionts.]
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Keywords: CELL WALL/ PHYCOBIONT/ CULTURE/ CON A/ SYMBIOSIS
Abstract: 1 table. [Reports the reappearance of Con A binding sites on phycobiont cell walls following isolation from the lichenized condition. " ... It is suggested that there can be a turnover of components in the original cell wall. Thus, the cell surface modifications of the alga induced by symbiosis are plastic, and can easily be reversed."]
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Keywords: TRICHARIA/ NEW TAXA/ NORTH AMERICA
Abstract: 4 figures. [New: Tricharia vezdae sp. nov.]
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Keywords: POLAND
Abstract: 1 table. [Many species are reported from the Czerkies Reserve of Roztocze National Park, Poalnd.]
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Keywords: ARCTIC/ ALASKA/ LICHENOMETRY/ RHIZOCARPON/ GROWTH/ RADIOCARBON DATING
Abstract: 8 figures. 2 tables. ["The Rhizocarpon geographicum curve has a great growth period lasting 200 yr based on historic, dendrochronologic, and direct measurement control; this is followed by a linear growth phase of approximately 3 mm per century based on radiocarbon dates."]
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Keywords: ALBERTA/ CANADA/ AIR POLLUTION/ EPIPHYTE
Abstract: 11 figures. [Air pollution study using IAP techniques.]
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Keywords: ALBERTA/ CANADA/ SULFUR/ ISOTOPE/ AIR POLLUTION/ SO2
Abstract: 2 tables. 10 figures. ["It is confirmed that Picea glauca gets its sulphur from both the soil and the air; arboreal lichens get their sulphur primarily from the atmosphere; and terricolous lichens get theirs from the air and particulate fallout. It is suggested that arboreal lichens selectively excrete isotopically light sulphur when thallus concentrations exceed 1, 4000 ppm."]
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Keywords: DYES/ LOBARIA/ USNEA/ CLADONIA/ PELTIGERA/ ECONOMIC USES
Abstract: 12 color plates. [Information on dyeing with lichens on pages 164-173. Lobaria, Umbilicaria, Usnea, Peltigera and Cladonia species are stressed.]
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Keywords: DIBENZOFURAN/ GYMNODERMA/ CHEMISTRY/ DIPHENYL ETHER/ AUSTRALIA/ MELACARPIC/ CONGRAYANIC
Abstract: 1 table. Several unnumbered figures. [The new substances, melacarpic acid and congrayanic acid, occur along with grayanic acid and fumarprotocetraric acid in Australian specimens of of Gymnoderma malacarpum.]
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Keywords: GROWTH/ FREE BOUNDARY/ PHOTOSYNTHESIS
Abstract: 3 figures. ["A theory of the growth of a lichen is presented, based upon the production of a carbohydrate by photosynthesis, partical consumption of it to thicken the lichen, diffusion of the remainder toward the outer edge, and its consumption there to increase the lichen radius. The mathematical formulation of the theory leads to a free boundary problem for the determination of the carbohydrate concentration, and of the lichen radius as a function of time."]
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Keywords: KOREA/ PARMELIA
Abstract: 20 fig. [New to Korea: Parmelia piedmontensis, P. subramigera, P. mexicana, P. taractica, P. relicina, P. borreri, P. cochleata, P. marmariza, P. reticulata, P. denegans, P. subaurulenta, P. homogenes, P. subcrinata, P. austrosinensis, P. praesorediosa, P. perlata, P. caperata. In Korean with English summary.]
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Keywords: ASCOSPORE DISCHARGE/ GERMINATION/ XANTHORIA/ PH/ GROWTH
Abstract: 1 figure. 2 tables. [Substrate and pH both affect germination in this species.]
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Keywords: LICHENOCONIUM/ PARASITE/ LECANORA/ GERMANY/ NOMENCLATURE
Abstract: 1 figure. [Observations made in Schleswig-Holstein "stress the futility of endeavouring to separate Lichenoconium species only on the basis of the host as was formerly the usual practice."]
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Keywords: BRITISH ISLES
Abstract: 8 figures. [Includes a list of 48 lichens in the study area.]
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Keywords: AIR POLLUTION/ ALUMINUM/ ALUMINUM FACTORY/ FRANCE
Abstract: 9 fig. 3 tab.
[Edit/Delete] [Upload PDF/URL] [ET: 2763]
Keywords: SYMBIOSIS/ REVIEW
Abstract: [Three chapters dealing with lichens are listed separately in this bibliography.]
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Keywords: SCOTLAND/ FORAY
Abstract: [Notes on interesting lichens observed on the foray (100 species recorded in all).]
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Keywords: REVIEW
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Keywords: NEW TAXA/ CETRARIA/ SPAIN
Abstract: [New: Cetraria iberica sp. nov. from Spain.]
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Keywords: SPAIN/ NEW TAXA/ BACIDIA/ CHECKLIST/ AIR POLLUTION
Abstract: 1 figure. 1 table. [Catalog of 70 lichen taxa as a baseline study prior to operation of an electric generating station. Twelve taxa are new reports for Spain. New: Bacidia microbola (Clemente) Crespo & Barreno, comb. nov.]
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Keywords: SYNTHESIS/ CLADONIA/ RHIZOPLACA/ LECANORA/ TREBOUXIA/ CHEMISTRY/ DEPSIDE/ PSEUDOTREBOUXIA/ GROWTH/ CULTURE/ SYMBIOSIS/ ENZYME
Abstract: 12 figures. 1 table. ["Successful resynthesis of the Cladonia cristatella mycobiont with its normal phycobiont and with Trebouxia isolates from 12 other species of lichens all produced the characteristic depside barbatic acid as the major secondary product. No characteristic lichen products were found in cultures of the C. cristatella mycobiont either alone, under a variety of cultural conditions, or mixed with Pseudotrebouxia phycobionts under the same conditions that led to the successful resynthesis with Trebouxia phycobionts. The production of characteristic lichen products is affected primarily by the establishment of a successful symbiosis and secondarily by as yet poorly defined environmental factors. The formation of many characteristic lichen products may involve algal inhibition of fungal enzymes."]
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Keywords: PARMELIA/ MICROCONIDIA/ DIMORPHISM/ PUNCTELIA/ NEW TAXA/ NORTH AMERICA
Abstract: 2 tables. 4 figures. ["The first microconidial dimorphism in noncrustose lichen-forming fungi to have ecogeographical correlations is reported from two American species." Parmelia semansiana sp. nov. is recognized as separate from Parmelia hypoleucites Nyl.]
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Keywords: REVIEW
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Keywords: CAROTENOID/ PARMELIACEAE/ CHEMISTRY
Abstract: 1 table. Several unnumbered figures. [25 carotenoids were found in 11 species.]
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Keywords: ECZYMA/ DERMATITIS/ EVERNIA/ ATRANORIN/ PATCH TEST/ ALLERGY
Abstract: 2 tables. 2 figures. [Atranorin appears to cause an eczyma reaction in selected individuals, and sensitivity can be detected by a patch test reaction. Source of the allergen is apparently Evernia prunastri.]
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Keywords: NEW ZEALAND/ GREAT BARRIER ISLAND/ COCCOTREMA/ SIPHULA
Abstract: 1 figure. [27 taxa from 16 genera were recorded; two species, Coccotrema porinopsis and Siphula ramalinoides are new reports for New Zealand.]
[Edit/Delete] [Upload PDF/URL] [ET: 2690]
Keywords: CANADA/ NEWFOUNDLAND
Abstract: 5 figures. 3 tables. [Some lichens are mentioned in the description of the plant communities sampled.]
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Keywords: PHYTOSOCIOLOGY/ MEETING REPORT
Abstract: 5 tables. [Report of a meeting and discussions of participants.]
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Keywords: PERTUSARIA/ KEY/ NEW TAXA/ NORTH AMERICA
Abstract: 136 figures. 29 tables. [Detailed treatment of 66 species grouped into two subgenera; keys. New: Pertusaria subgen. Pionospora (Th. Fr.) comb. nov., P. floridana sp. nov., P. hypothamnolica sp. nov., P. multipunctoides sp. nov., P. santamonicae sp. nov., P. subamgigens sp. nov., P. suboculata sp. Brodo & Dibb., sp. nov.; P. sulcata sp. nov., P. arizonica sp. nov., P. californica sp. nov., P. ostiolata sp. nov., P. paratuberculifera sp. nov.; P. shenandoensis Hale & Dibb., sp. nov.; P. sinusmexicani sp. nov., P. consocians sp. nov., and P. valliculata sp. nov. Publication is available from the Milwaukee Public Museum, Publications Division, 800 W. Wells St., Milwaukee, WI 53233. Price: $22.50 plus $0.75 for postage and handling.]
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Keywords: NITROGEN FIXATION/ PHYCOBIONT/ NOSTOC/ PELTIGERA/ PILI/ FIMBRIAE
Abstract: 5 figures. ["The Nostoc cyanobiont of the lichen Peltigera canina when grown on N2 possesses, in the motile stage, descrete unbranched non-flagellar appendages (fimbriae or pili)."]
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Keywords: REVIEW
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Keywords: JAMAICA/ AIR POLLUTION/ WEST INDIES
Abstract: 2 tables. 2 figures. [Preliminary study of air pollution effects on lichens near a bauxite plant in South Manchester, Jamaica.]
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Keywords: MANNA/ HISTORY/ LECANORA
Abstract: 17 maps. 16 figures. [Includes a discussion of Lecanora esculenta and other species as "manna lichen" on pages 43-54.]
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Keywords: YUKON/ BRITISH COLUMBIA/ CANADA
Abstract: [6 lichens are reported.]
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Keywords: IOWA/ CHECKLIST/ FOLIOSE/ MACROLICHEN
Abstract: 1 figure. 2 tables. [Ninety-one species in 16 genera are tabulated on material from 49 counties. Nineteen species are new to the state.]
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Notes: In Spanish.
URL:
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Keywords: REVIEW
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Keywords: REVIEW
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Keywords: REVIEW
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Keywords: BIBLIOGRAPHY
Abstract: [Annotated bibliography of 116 references.]
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Keywords: BIBLIOGRAPHY
Abstract: [Annotated bibliography of 114 references.]
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Keywords: BIBLIOGRAPHY
Abstract: [Annotated bibliography of 99 references.]
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Keywords: BIBLIOGRAPHY
Abstract: [Annotated bibliography of 77 references.]
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Keywords: NORWAY/ PARMELIELLA
Abstract: 3 fig. ["Parmeliella plumbea is reported from Hamnes in Balsfjord in the county of Troms. It is a rare species, previously not known between southern Finnmark and southern Troms. In Fennoscandia this is a suboceanic species. Suboceanic species like the bryophyte Plagiothecium undulatum have their coastal distribution pattern continued northwards to Troms and Finnmark. Parmeliella plumbea, however, has its distribution pattern shifted towards the interior, probably reflecting its relatively high temperature demand, combined with a higher air humidity in northern interior parts as compared with areas further to the south. Lichens like Pannaria conoplea, P. rubiginosa and Lobaria amplissima seem to share the distribution pattern of Parmeliella plumbea." Summary and title translation provided by Arve Elvebakk.]
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Keywords: PHAEOPHYSCIA/ NOMENCLATURE/ AUTHOR CITATIONS
Abstract: [A careful look at "effective publication date" shows that the new combinations made by the author in Phaeophyscia in 1978 predate those made by Moberg and Awasthi.]
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[ET: 673]
Keywords: NOMENCLATURE/ PARMELIA/ MELANELIA/ PLEUROSTICTA
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Keywords: OROPOGON/ NEW TAXA/ MEXICO/ COLOMBIA/ VENEZUELA
Abstract: [New: Oropogon atranorius sp. nov. and O. lopezii sp. nov. All collections of the new taxa are from high elevations from Mexico south to Colombia and Venezuela.]
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[ET: 674]
Keywords: CONTACT DERMATITIS/ REVIEW
Abstract: 11 fig. (many formulae) 6 tab. [Review. A few common lichen phenolics listed.]
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Keywords: OCHROLECHIA/ GROWTH/ NORWAY
Abstract: 2 figures. [Average growth rate of 3.2 mm per year during the period was recorded for this species in West Norway. The lichen was successful in eliminating a competing moss, Hypnum cupressiforme var. filiformis, during the time period.]
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Keywords: PROTEIN/ TECHNIQUE/ ISOELECTRIC FOCUSING/ CLADINA/ CLADONIA/ PELTIGERA/ PARMELIA/ DERMATOCARPON
Abstract: 1 figure. ["The most effective was to pulverize acetone-washed thallus fragments in liquid nitrogen. For separation of lichen proteins, isoelectric focusing on polyarcylamide gels was found to be superior to electrophoresis. The proteins were visualized using Coumassive Brilliant Blue, and the isoelectric points of most were ca. 4.0-6.5." Study included specimens of Cladina, Cladonia, Peltigera, Parmelia and Dermatocarpon.]
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Keywords: ONTARIO/ SAXICOLOUS/ CLADONIA/ CANADA
Abstract: 2 tables. [15 lichen species are reported from this middle lower Devonian formation. Cladonia cylindrica is reported new to Ontario.]
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Keywords: POMERANIA/ POLAND
Abstract: 1 figure. [Paper reports 155 species collected in this area of Poland. Usnea perplectans is reported as an addition to the Polish lichen flora.]
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Keywords: SUCCESSION/ POLAND/ PINE FORESTS/ OWN/ CLADONIA
Abstract: 4 figures. 1 table. [Reports the succession of the dominant lichens in pine plantations of different ages. "A total of 38 surface lichens were found in forests of all age classes; 28 of them belong to the genus Cladonia." Studies were carried out in western Pomerania, Poland.]
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Keywords: POMERANIA/ OWN/ CETRARIA/ POLAND
Abstract: 4 figures. 1 table. ["The paper presents a floristic and phytosociological characterization of a stand of Cetraria nivalis in the north-western part of the Tuchola Forest."]
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Keywords: XANTHORIA
Abstract: 12 fig. [Includes drawings, distribution maps, and a key to the 6 species of Xanthoria known from Bavaria.]
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Keywords: SYNTHESIS/ XANTHONE/ BENZOPHENONE/ CHEMISTRY
Abstract: Several unnumbered figures. ["The unambiguous total synthesis of eight chlorine-containing lichen xanthones by ring closure of appropriately substituted benzophenones is described."]
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Keywords: BRITISH ISLES/ SEASHORE/ MARINE/ SAXICOLOUS/ ECOLOGY
Abstract: [Detailed review with many references. Most of the discussion concentrates on British seashores.]
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Keywords: METAL UPTAKE/ TECHNIQUE/ UMBILICARIA/ NICKEL
Abstract: 5 tables. 4 figures. [Studies on Umbilicaria muhlenbergii showed that 66% of the Ni2+ taken up by the lichen was associated with the algal layer. Furthermore, the uptake capacity of the fungal layer was smaller than the algal layer.]
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Keywords: EXSICCATI/ RAMALINA/ OWN/ ISOTYPE/ FOLLMANN
Abstract: [Labels for numbers 301-320 in this exsiccat including the isotype of Ramalina superfraxinea Foll. et Sanch.-Pinto.]
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Keywords: ROCCELLA/ NEW TAXA/ ROCCELLACEAE
Abstract: 5 figures. [New: Roccella verruculosa sp. nov.]
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[ET: 699]
Keywords: TORNABENIA/ PHYSCIACEAE/ TORNABENIOPSIS/ NEW TAXA/ OWN/ NOMENCLATURE
Abstract: [Tornabenia is shown to be a later homonym of Tornabenea and is rejected. Tornabeniopsis nom. nov. is proposed to replace Tornabenia. New: Tornabeniopsis atlantica (Ach.) comb. nov. and T. ephebea (Ach.) comb. nov.]
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Keywords: USNEA/ CHEMISTRY/ FLEXILIN
Abstract: [Products were studied from 33 species from 14 famiies (including Lichenes Imperfecti); 12 taxa were studied for the first time. Flexilin is described as a new lichen substance from Usnea flexilis.]
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Keywords: RAMALINA/ CANARY ISLANDS/ NEW TAXA
Abstract: 5 figures. [New: Ramalina superfraxinea sp. nov.]
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Keywords: CANADA/ AIR POLLUTION/ ONTARIO
Abstract: 5 tables. 3 figures. [Several lichens are mentioned.]
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Keywords: ANTARCTIC/ CRYPTOENDOLITHIC/ BUELLIA/ SAXICOLOUS
Abstract: 2 figures. [Specimens are tentatively placed in the genus Buellia.]
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Keywords: VERRUCARIA/ ARTHOPYRENIA/ NOMENCLATURE
Abstract: 6 figures. [The species usually lacks an algal associate on this host and may be best placed in the genus Arthopyrenia.]
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Keywords: NEW ZEALAND/ KNIGHTIELLA/ NEW TAXA/ AUSTRALASIA/ AUSTRALIA
Abstract: 3 figures. [Detailed study of this unusual taxon Knightiella splachnirima (Hook. f. et Tayl.) Gyelnik.]
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Keywords: BAEOMYCES/ NEW ZEALAND/ KEY
Abstract: 4 figures. [Recognition of 3 species; key. Many taxa are considered synonyms and are rejected.]
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Keywords: XANTHOPARMELIA/ CHONDROPSIS/ NEW ZEALAND/ KEY/ NEW TAXA/ PARMELIACEAE
Abstract: 17 figures. [Recognition of 16 species of Xanthoparmelia and 1 of Chondropsis; key. New: Xanthoparmelia australasica sp. nov., X. flavescentiregens (Gyelnik) comb. nov., X. mougeotina (Nyl.) comb. nov.; nine species are new to the New Zealand lichen flora.]
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Keywords: PSEUDOCYPHELLARIA/ NEW TAXA/ NOMENCLATURE/ NEW ZEALAND
Abstract: 2 figures. [Notes on 30 taxa of the 40 now known for New Zealand. New: Pseudocyphellaria coerulescens (Mont.) comb. nov., P. condensata (Zahlbr.) comb. nov., P. coriacea (Hook. f. & Taylor) comb. nov., P. delisea (Fee) comb. nov., P. dissimilis (Nyl.) comb. nov., P. hookeri (Church Bab.) comb. nov., P. lividofusca (Krempelh.) comb. nov., P. multifida (Laurer) comb. nov., P. poculifera (Mull. Arg.) comb. nov., P. psilophylla (Mull. Arg.) comb. nov., P. pubsescens (Mull. Arg.) comb. nov., P. montagnei (Church Bab.) comb. nov., and P. rubella (Hook. f. & Taylor) comb. nov. Many taxa are reduced to synonymy.]
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Keywords: USNIC/ UREASE/ ENZYME/ BINDING SITE/ CHEMISTRY
Abstract: 3 figures. ["The existence of two class of binding points for L-usnic acid on the urease molecule is proposed, the first showing high affinity for the ligand, related with the loss of activity, and the second, of low affinity, related to polymerization process."]
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Keywords: NEWSLETTER/ BRITISH LICHEN SOCIETY/ ACID RAIN/ CHEMISTRY/ TECHNIQUE
Abstract: [News and views of members of the British Lichen Society. Includes brief article on acid rain and a supplement on techniques of lichen microchemistry.]
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Keywords: NEWSLETTER/ BRITISH ISLES
Abstract: [News and views of members of the British Lichen Society.]
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Keywords: BRITISH ISLES/ NORTHUNBERLAND/ ECOLOGY/ LICHENICOLOUS
Abstract: 2 tables. 10 figures. [Flora contains 589 species, 7 of which are new to England and 271 are new to the county. Thorough discussions of various lichen habitats and ecological notes are included along with a detailed list of all taxa. Twelve species of lichenicolous fungi are also included in a list at the end of the paper as is a gazetteer of localities and grid references.]
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Keywords: TERRICOLOUS/ BRITISH ISLES/ DERBYSHIRE/ LAND USE
Abstract: [Study of terricolous lichens of a limestone plateau of Derbyshire. Details given for assembledges of lichens in unimproved grazing, derelict lead mining and modern fluorspar working areas. "Land-use is now the chief determinant of terricolous lichen communities in the area studied."]
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Keywords: LECANORA/ ASPICILIA/ ERRANT GROWTH/ USSR
Abstract: [Discussion of errant growth in Aspicilia lacunosa and Lecanora baranowii; in Russian.]
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Keywords: ACAROSPORA/ MONGOLIA/ USSR
Abstract: 1 table. [Discussion of the yellow species of Acarospora in Mongolia. Nine species are treated; in Russian.]
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Keywords: USSR/ VOLGA-KAMA STATE RESERVES
Abstract: [Many species are reported.]
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Keywords: NITROGEN FIXATION/ NEW ZEALAND/ STICTACEAE/ PSEUDOCYPHELLARIA/ STICTA
Abstract: 3 tables. 3 figures. ["Forty-four species of New Zealand lichens, including 22 species of Pseudocyphellaria and seven of Sticta, were analysed for nitrogenase activity by acetylene reduction. Nitrogen fixation was confirmed by 15N enrichment studies." All species with blue-green phycobionts showed positive activity, and nitrogen fixation rates were species specific.]
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