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  1. By: Semple, John C. - Xiang, Chunsheng - Zhang, Jie - Horsburgh, M - Cook, Edward R.
    Type: Article
    In: Rhodora
    Volume: 103
    Date: 2001
    Page Range: 202--218
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Cook, Edward R.
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 109
    Date: 1997
    Page Range: 39--39
    Publication Info: [London s.n