The Lichens and Lichenicolous Fungi of Belgium and Luxembourg ...

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40 P. DIEDERICH & E. SÉRUSIAUX geïnteresseerd bleken te zijn in ons onderzoeksgebied. De medewerking van twee van hen, P. P. G. van den Boom en A. M. Brand, is overigens duidelijk gebleken door hun nauwe betrokkenheid bij de publicatie van dit werk. Ook moet het ijverige karteerwerk van macrolichenen in Luxemburg door E. Wagner-Schaber (1987) genoemd worden, en ook de studies opgezet door studenten van de Universiteit van Gent; zie hiervoor het proefschrift van M. Hoffmann over epifytische korstmossen en epifytengemeenschappen in Vlaanderen dat in 1993 verscheen. In de laaste vijftien jaar onderzoek zien we de paradox steeds duidelijker: aan de ene kant is een onverwacht grote diversiteit aan korstmossen gevonden. Hierbij zijn zeldzame en slecht bekende soorten en zelfs onbeschreven soorten. Aan de andere kant zagen én zien we een afname en verslechtering door de enorme invloed die het menselijk handelen op het milieu heeft, zowel in natuurgebieden als in half-natuurlijke gebieden. Ook de luchtverontreiniging veranderde sterk: de zure regen nam af, maar hoge concentraties ammoniak - en ‘s zomers ook ozon - zijn daarvoor in de plaats gekomen, vooral benoorden de lijn Samber-Maas-Vesder. Veel voor korstmossen belangrijke gebieden zijn bijna volledig vernietigd; de bosbouw is veel intensiever geworden en is nu een van de grootste bedreigingen voor de korstmosflora. Van tientallen soorten die tijdens dit werk aan het licht zijn gekomen, zijn de populaties zo klein - soms maar een paar individuen - dat elke willekeurige verandering in hun omgeving ze in gevaar brengt. We hopen dat door deze checklist de kleine en onbekende organismen die deze korstmossen en hun lichenicole schimmels zijn, meer aandacht zullen krijgen: het zijn tenslotte één van de beste milieu-indicatoren die we hebben.
Species included THE LICHENS OF BELGIUM AND LUXEMBOURG. AN ANNOTATED CHECKLIST 41 Organisation of the checklist The present checklist includes all taxa of lichenized and lichenicolous fungi which have been recorded in the study area. Non-lichenized and non-lichenicolous fungi are only included if • they are loosely or doubtfully associated with algae or cyanobacteria (e. g. Naetrocymbe fraxini); • they have often been considered as lichens in the past (e. g. Naetrocymbe saxicola); • they have traditionally been studied by lichenologists (e. g. some species of Caliciales); • they are fungicolous on species occasionally considered as lichens (e. g. Nectriopsis indigens on Naetrocymbe saxicola); • they are genuinely non-lichenized fungi that look like lichens and have never been collected and studied by other mycologists (e. g. species of Lichenothelia and Peridiothelia). We also include some lichenicolous species which are likely to be just saprotrophic and not truly (i. e. obligatory) lichenicolous. The non-lichenized genera Mniacea Boud. and Sarea Fr. have not been included. As a rule, we only accept taxa (written in boldface) for which we have studied the corresponding specimens, and published relevant data in one of our recent papers. Thus, species which have never been published from the study area are never included: there is thus no new report of the occurrence of any species in the study area. For some poorly known genera, like Verrucaria, we also accept a limited number of species which have been published rather recently by other lichenologists, but for which we have not examined any material. Older published records for which we were unable to examine any corresponding specimens have not been accepted, unless otherwise stated; such species which are doubtfully present in the study area are listed after the accepted taxa, and are printed in italics. Data provided for each species For each accepted taxon, listed in alphabetic order, the following data are provided (some being optional): • the name, possibly preceded by the symbol (*) if it is a lichenicolous lichen, * if it is a lichenicolous fungus, (+) if it is a doubtfully lichenized fungus, and + if it is a nonlichenized fungus; • common synonyms, and synonyms found in the literature of the study area [for Belgium, the literature published after Duvigneaud & Giltay (1938), and for Luxembourg, that published after Koltz (1897) has been screened for synonyms]; • known or presumed teleomorph or anamorph connections;
Page 1 and 2: The Lichens and Lichenicolous Fungi
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Page 5 and 6: Contents Introduction .............
Page 7 and 8: L THE LICHENS OF BELGIUM AND LUXEMB
Page 9 and 10: THE LICHENS OF BELGIUM AND LUXEMBOU
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Page 49 and 50: Nomenclatuur THE LICHENS OF BELGIUM
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Page 75 and 76: BOTRYDINA Bréb. THE LICHENS OF BEL
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THE LICHENS OF BELGIUM AND LUXEMBOU
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CONIDA A. Massal. THE LICHENS OF BE
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EPILICHEN Clem. THE LICHENS OF BELG
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LEPTORHAPHIS Körb. THE LICHENS OF
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PHYSALOSPORA Niessl THE LICHENS OF
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SPILONEMA Bornet THE LICHENS OF BEL
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THYREA A. Massal. THE LICHENS OF BE
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Eopyrenula R. C. Harris grandicula
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