@book{AleAghaBoyleBraunetal.2008,
  author    = {Ale-Agha, Nosratollah and Boyle, H. and Braun, Uwe and Butin, H. and Jage, Horst and Kummer, Volker and Shin, H.},
  title     = {Taxonomy, host range and distribution of some powdery mildew fungi (Erysiphales)},
  year      = {2008},
  abstract  = {Oidium pedaliacearum sp. nov. (; O. sesami, nom. inval.) and Podosphaera macrospora comb. et stat. nov. (; Sphaerotheca alpina f. macrospora) are introduced, and the taxonomy and distribution of Erysiphe celosiae is discussed. New host species and new collections of Erysiphe cruciferarum (on Cleome hassleriana), E. flexuosa (on Aesculus hippocastanum), E. hedwigii (on Viburnum carlesii), E. heraclei (on Tinguarra montana), E. cf. macleayae (on Macleaya cordata), E. prunastri (on Prunus cerasifera), E. sedi (on Sedum aff. spectabilis), E. trifolii (on Trigonella caerulea), Golovinomyces cichoracearum (on Argyranthemum pinnatifidum subsp. succulentum), G. cf. hydrophyllacearum (on Nemophila menziesii), G. orontii (on Nolana spp.), G. cf. orontii (on Tiarella cordifolia), Neoerysiphe cumminsiana (on Bidens cf. ferulifolia), Oidium clitoriae (on Clitoria ternatea), O. cf. hortensiae (on Philadelphus coronarius), O. pedilanthi (on Pedilanthus tithymaloides), Oidium (Pseudoidium) sp. (on Utricularia alpina), Podosphaera sp. (on Bergia capensis), Sawadaea bicornis (on Acer platanoides) and S. tulasnei (on Acer ginnala and A. tatarica) are recorded from France, Germany, Greece and Mexico.},
  language  = {en}
}
@book{BraunAleAghaBolayetal.2009,
  author    = {Braun, Uwe and Ale-Agha, Nosratollah and Bolay, Adrien and Boyle, H. and Brielmaier-Liebetanz, U. and Emgenbroich, D. and Kruse, J. and Kummer, Volker},
  title     = {New records of powdery mildew fungi (Erysiphaceae)},
  year      = {2009},
  abstract  = {The conidial stage and chasmothecia of Golovinomyces orontii have been found in Germany on cultivated Limnanthes douglasii. A powdery mildew anamorph found in the Netherlands on Malva alcea agrees morphologically with the Oidium of the latter species as well. Golovinomyces sp. (anamorph) on Parthenium integrifolium is described and discussed. Erysiphe sp. has been found in Germany on Acer opalus, and E. magnifica is recorded from Germany and Switzerland on Magnolia spp. Oidium passiflorae is new to Switzerland. An Oidium morphologically agreeing with the anamorph of Podosphaera aphanis has recently been collected on Exacum macranthum cultivated in a greenhouse, and conidiophores and conidia of a species of Podosphaera sect. Sphaerotheca subsect. Magnicellulatae (P. fusca complex) on Phlox paniculata and Polemonium caeruleum have been found in Germany.},
  language  = {en}
}
@book{BraunJageKummeretal.2008,
  author    = {Braun, Uwe and Jage, Horst and Kummer, Volker and Zimmermann, Holger},
  title     = {Podosphaera cf. pruinosa on Rhus hirta in Germany},
  year      = {2008},
  abstract  = {The introduction of a new powdery mildew disease on Rhus hirta in various parts of Germany (Brandenburg, Rhine- Westphalia, Sachsen-Anhalt and Saxony) is reported. The anamorph found on this host agrees well with the North American Podosphaera pruinosa. Although the teleomorph has not yet been found in Germany and a molecular study has not yet been possible due to the lack of fresh North American material for a comparison, there is little doubt that the European outbreak of the Rhus powdery mildew disease may be referred to as Podosphaera pruinosa. Morphology, taxonomy and distribution of Podosphaera species on Rhus and other hosts of the Anacardiaceae are discussed in detail.},
  language  = {en}
}
@book{Kummer1992,
  author    = {Kummer, Volker},
  title     = {Historie der Krausnicker Kirche},
  publisher = {Fata-Morgana-Verl.},
  address   = {Berlin},
  pages     = {28 S.},
  year      = {1992},
  language  = {de}
}
@book{Kummer1993,
  author    = {Kummer, Volker},
  title     = {Notizen zur Pflanzenwelt des NSG "Alter Nuthelauf"},
  year      = {1993},
  language  = {de}
}
@book{KuehlingKummer1999,
  author    = {K{\"u}hling, Matthias and Kummer, Volker},
  title     = {Bemerkenswerte Flechtenfunde aus Brandenburg IV},
  year      = {1999},
  language  = {de}
}