@article{BitzerLaessoeFournieretal.2008,
  author    = {Bitzer, Jens and Laess{\o}e, Thomas and Fournier, Jaques and Kummer, Volker and Decock, Cony and Tichy, Hans-Volker and Piepenbring, Meike and Persoh, Derek and Stadler, Marc},
  title     = {Affinities of Phylacia and the daldinioid Xylariaceae, inferred from chemotypes of cultures and ribosomal DNA sequences},
  issn      = {0953-7562},
  year      = {2008},
  abstract  = {A chemotaxonomic evaluation using hplc profiling was undertaken to resolve the infrageneric and intergeneric affinities of over 150 strains of Xylariaceae. Daldinia placentiformis, Hypoxylon nicaraguense, H. polyporus, and Phylacia sagrana were found to contain 8-methoxy-1-naphthol, which is apparently absent in Annulohypoxylon, Hypoxylon, and related genera with bipartite stromata. D. placentiformis and other species of Daldinia and Entonaema produced this naphthol, 5-hydroxy-2-methylchromone, isosclerone derivatives, and 'AB-5046' phytotoxins. Phylacia sagrana differed from most Daldinia spp., except for D. caldariorum, by producing eutypine derivatives in addition to the above compounds. indolylquinones were observed in H. nicaraguense and H. polyporus. Isosclerones were also identified in the A. multiforme complex, but Hypoxylon and other Annulohypoxylon and most Hypoxylon spp. studied Annulohypoxylon spp. contained S-methylmellein as the major metabolite of their cultures. Based on the occurrence of the above metabolites, further mellein-type dihydroisocoumarins, teleomorphic and anamorphic Xylariaceae with Nodulisporium-like anamorphs ('Hypoxyloideae') were divided into various chemotypes. A comparison of their 5.8S/ ITS nuc-rDNA sequences agreed in some important aspects with the above results: H. nicaraguense and H. polyporus appeared basal to a clade comprising Daldinia, Entonaema, and Ph. sagrana. The latter species appeared allied to D. caldariorum, but was distantly related to Pyrenomyxa morganii and Hypoxylon s. str. (C) 2007 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.},
  language  = {en}
}
@article{BenkertKummer1993,
  author    = {Benkert, Dieter and Kummer, Volker},
  title     = {Amanita vittadinii in Brandenburg},
  year      = {1993},
  language  = {de}
}
@article{Kummer1998,
  author    = {Kummer, Volker},
  title     = {Auf der Suche nach der "Blauen Blume"},
  year      = {1998},
  language  = {de}
}
@article{KummerLuschkaOtto2005,
  author    = {Kummer, Volker and Luschka, Norbert and Otto, Peter},
  title     = {Aufruf f{\"u}r neue Serien zur Kartierung der Pilze Ostdeutschlands},
  year      = {2005},
  language  = {de}
}
@article{Kummer2003,
  author    = {Kummer, Volker},
  title     = {Beitrag zur Flora des Potsdamer Stadtgebietes},
  issn      = {0724-3111 -},
  year      = {2003},
  language  = {de}
}
@article{KummerBuhr2006,
  author    = {Kummer, Volker and Buhr, Christoph},
  title     = {Beitrag zur Flora des Potsdamer Stadtgebietes II},
  year      = {2006},
  language  = {de}
}
@article{BuhrKummer2010,
  author    = {Buhr, Christoph and Kummer, Volker},
  title     = {Beitrag zur Flora des Potsdamer Stadtgebietes III},
  issn      = {0945-4292},
  year      = {2010},
  abstract  = {A list of rare or interesting phanerogams from Potsdam and surroundings is presented. Most of them were recorded between 2006 and 2008. In some cases short remarks about the taxonomy, distribution and other details are given. The collections of Geranium purpureum and Parietaria judaica are the first records for Brandenburg. The collections of Agastache foeniculum, Coreopsis lanceolata, Geranium nodosum, Hieracium amplexicaule, Juncus ensifolius, Lactuca virosa, Sedum sarmentosum and Verbena bonariensis are probably the first information about adventive occurences of these species in this Federal State. Viscum album is reported on rare host species: Chaenomelis sp., Quercus spp. and Rosa hybrids.},
  language  = {de}
}
@article{JageKummerIlligetal.2006,
  author    = {Jage, Horst and Kummer, Volker and Illig, Hubert and Petrick, Wolfgang},
  title     = {Beitrag zur Kenntnis phytoparasitischer Kleinpilze in der Niederlausitz (Land Brandenburg) : Teil 2},
  year      = {2006},
  language  = {de}
}
@article{Kummer1999,
  author    = {Kummer, Volker},
  title     = {Beitrag zur Pilzflora des Neuzeller Fasanenwaldes},
  year      = {1999},
  language  = {de}
}
@article{Kummer2008,
  author    = {Kummer, Volker},
  title     = {Beitr{\"a}ge zur Pilzflora der Luckauer Umgebung : die Ergebnisse der Pilzexkursion am 07.10.07 in der Calauer Schweiz bei Cabel},
  year      = {2008},
  language  = {de}
}