, Volume 41, Issue 1, pp 55–60 | Cite as

Mycopappus quercus sp. nov., causing frosty mildew inQuercus acutissima

  • Yasuo Suto
  • Mikiko Kawai
Original Papers


The causal fungus of frosty mildew inQuercus acutissima was taxonomically studied. Brown spots with conical white to yellowish tufts of the causal, fungus developed on the leaves, followed by successive defoliation. The fungus was regarded as a new species ofMycopappus, M. quercus, from the morphology of the multicellular propagules. The ascogenous stage and true conidia of the fungus were not observed, although sclerotia were formed on the fallen diseased leaves.

Key Words

frosty mildew Mycopappus quercus Quercus acutissima 


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Copyright information

© The Mycological Society of Japan 2000

Authors and Affiliations

  • Yasuo Suto
    • 1
  • Mikiko Kawai
    • 1
  1. 1.Shimane Prefecture Forest Research CenterShimaneJapan

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