No effect of host tree species on the physiology of the epiphytic orchid Bulbophyllum japonicum in a subtropical rainforest in northeastern Taiwan

Craig E. Martin, Teng Chiu Lin, Chia Chun Hsu, Shin Hwei Lin

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3 Citations (Scopus)


Chlorophyll concentrations, Crassulacean acid metabolism (CAM) acid fluctuations, and chlorophyll fluorescence parameters were measured in individuals of the epiphytic orchid Bulbophyllum japonicum growing on 3 different host tree species in a subtropical rainforest in northeastern Taiwan. No differences in any of the physiological measures were found. Thus, although the host tree species vary considerably in leaf morphology, bark characteristics, and elemental composition of stemflow water, such differences did not substantially impact the physiology of this epiphytic orchid. These results may reflect the slow growth rates and minimal nutrient requirements of this slow-growing, shade-adapted orchid. The findings of this study help explain the lack of host specificity in this epiphyte and perhaps in many other species.

Original languageEnglish
Pages (from-to)241-251
Number of pages11
JournalTaiwan Journal of Forest Science
Issue number3
Publication statusPublished - 2007 Sep 1



  • Crassulacean acid metabolism
  • Epiphyte
  • Host specificity
  • Orchid
  • Subtropical rainforest

ASJC Scopus subject areas

  • Forestry

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