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  1. By: Yang, Hong
    Type: Article
    In: Arnoldia
    Volume: 58
    Issue: 4
    Date: 1998
    Page Range: 60--71
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  2. By: Yang, Hong - Leng, Qin
    Type: Article
    In: Arnoldia
    Volume: 76
    Issue: 2
    Date: 2018
    Page Range: 24--32
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University