, Volume 42, Issue 6, pp 549–554 | Cite as

A new species ofExobasidium causing witches' broom onRhododendron wadanum

  • Hideyuki NagaoEmail author
  • Akinori Ezuka
  • Hiroto Ohkubo
  • Makoto Kakishima
Original Papers


Witches' broom onRhododendron wadanum has been observed since 1994 in Nagano Pref. and recently, in 2000, it was found at Mt. Tsukuba, Ibaraki Pref., Japan. In comparison with the morphology, the mode of germination of basidiospores and the cultural characteristics of the 99 validly described taxa, this fungus was considered as a new species and namedExobasidium nobeyamense.

Key Words

Basidiomycetes Japan Rhododendron wadanum taxonomy yeast-like growth 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. Burt, E. A. 1915. The Thelephoraceae of North America. IV.Exobasidium. Ann. Mo. Bot. Gard.2: 627–659.CrossRefGoogle Scholar
  2. Ezuka, A. 1990. Notes on some species ofExobasidium in Japan (II). Trans. Mycol. Soc. Japan31: 439–455.Google Scholar
  3. Ezuka, A. 1991a. Notes on some species ofExobasidium in Japan (III). Trans. Mycol. Soc. Japan32: 71–86.Google Scholar
  4. Ezuka, A. 1991b. Notes on some species ofExobasidium in Japan (IV). Trans. Mycol. Soc. Japan32: 169–185.Google Scholar
  5. Graafland, W. 1960. The parasitism ofExobasidium japonicum Shir. on Azalea. Acta Botanica Neerlandica9: 347–379.Google Scholar
  6. McNabb, R. F. R. 1962. The genusExobasidium in New Zealand. Trans. Roy. Soc. N. Z.1: 259–268.Google Scholar
  7. Nannfeldt, J. A. 1981.Exobasidium, a taxonomic reassessment applied to the European species. Symb. Bot. Ups.28: 1–72.Google Scholar
  8. Savile, D. B. O. 1959. Notes onExobasidium. Can. J. Bot.37: 641–656.CrossRefGoogle Scholar
  9. Sundström, K. R. 1964. Physiological and morphological studies of some species belonging to the genusExobasidium. Phytopathol. Z.40: 213–217.Google Scholar
  10. Tanaka, K. 1992. Sousa-densi-kenbikyo-gijutu. Koudansya, Tokyo. (In Japanese.)Google Scholar
  11. Zhang, X. Y., Arai, K., Sakoda, T. and Iwai, H. 1995. A new variety ofExobasidium otanianum isolated fromRhododendron dilatatum var.satsumense. Nippon Kingakukai Kaiho36: 97–102.Google Scholar

Copyright information

© The Mycological Society of Japan 2001

Authors and Affiliations

  • Hideyuki Nagao
    • 1
    Email author
  • Akinori Ezuka
    • 2
  • Hiroto Ohkubo
    • 3
  • Makoto Kakishima
    • 1
  1. 1.Institute of Agriculture and ForestryUniversity of TsukubaTsukubaJapan
  2. 2.National Institute of Agribiological ResourcesTsukubaJapan
  3. 3.Division of MicrobiologyNational Institute of Agro-Environmental Sciences (NIAES)TsukubaJapan

Personalised recommendations